257322780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{769}}^1$

素因数の和:821

約数の個数: 216

約数和(自身を含む): 923242320

約数和(自身を除く): 665919540

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 13, 15, 18, 20, 22, 26, 30, 33, 36, 39, 44, 45, 52, 55, 60, 65, 66, 78, 90, 99, 110, 117, 130, 132, 143, 156, 165, 169, 180, 195, 198, 220, 234, 260, 286, 330, 338, 390, 396, 429, 468, 495, 507, 572, 585, 660, 676, 715, 769, 780, 845, 858, 990, 1014, 1170, 1287, 1430, 1521, 1538, 1690, 1716, 1859, 1980, 2028, 2145, 2307, 2340, 2535, 2574, 2860, 3042, 3076, 3380, 3718, 3845, 4290, 4614, 5070, 5148, 5577, 6084, 6435, 6921, 7436, 7605, 7690, 8459, 8580, 9228, 9295, 9997, 10140, 11154, 11535, 12870, 13842, 15210, 15380, 16731, 16918, 18590, 19994, 22308, 23070, 25377, 25740, 27684, 27885, 29991, 30420, 33462, 33836, 34605, 37180, 39988, 42295, 46140, 49985, 50754, 55770, 59982, 66924, 69210, 76131, 83655, 84590, 89973, 99970, 101508, 109967, 111540, 119964, 126885, 129961, 138420, 149955, 152262, 167310, 169180, 179946, 199940, 219934, 253770, 259922, 299910, 304524, 329901, 334620, 359892, 380655, 389883, 439868, 449865, 507540, 519844, 549835, 599820, 649805, 659802, 761310, 779766, 899730, 989703, 1099670, 1169649, 1299610, 1319604, 1429571, 1522620, 1559532, 1649505, 1799460, 1949415, 1979406, 2199340, 2339298, 2599220, 2859142, 3299010, 3898830, 3958812, 4288713, 4678596, 4948515, 5718284, 5848245, 6598020, 7147855, 7797660, 8577426, 9897030, 11696490, 12866139, 14295710, 17154852, 19794060, 21443565, 23392980, 25732278, 28591420, 42887130, 51464556, 64330695, 85774260, 128661390, 257322780]

約数ペア:

[(1, 257322780), (2, 128661390), (3, 85774260), (4, 64330695), (5, 51464556), (6, 42887130), (9, 28591420), (10, 25732278), (11, 23392980), (12, 21443565), (13, 19794060), (15, 17154852), (18, 14295710), (20, 12866139), (22, 11696490), (26, 9897030), (30, 8577426), (33, 7797660), (36, 7147855), (39, 6598020), (44, 5848245), (45, 5718284), (52, 4948515), (55, 4678596), (60, 4288713), (65, 3958812), (66, 3898830), (78, 3299010), (90, 2859142), (99, 2599220), (110, 2339298), (117, 2199340), (130, 1979406), (132, 1949415), (143, 1799460), (156, 1649505), (165, 1559532), (169, 1522620), (180, 1429571), (195, 1319604), (198, 1299610), (220, 1169649), (234, 1099670), (260, 989703), (286, 899730), (330, 779766), (338, 761310), (390, 659802), (396, 649805), (429, 599820), (468, 549835), (495, 519844), (507, 507540), (572, 449865), (585, 439868), (660, 389883), (676, 380655), (715, 359892), (769, 334620), (780, 329901), (845, 304524), (858, 299910), (990, 259922), (1014, 253770), (1170, 219934), (1287, 199940), (1430, 179946), (1521, 169180), (1538, 167310), (1690, 152262), (1716, 149955), (1859, 138420), (1980, 129961), (2028, 126885), (2145, 119964), (2307, 111540), (2340, 109967), (2535, 101508), (2574, 99970), (2860, 89973), (3042, 84590), (3076, 83655), (3380, 76131), (3718, 69210), (3845, 66924), (4290, 59982), (4614, 55770), (5070, 50754), (5148, 49985), (5577, 46140), (6084, 42295), (6435, 39988), (6921, 37180), (7436, 34605), (7605, 33836), (7690, 33462), (8459, 30420), (8580, 29991), (9228, 27885), (9295, 27684), (9997, 25740), (10140, 25377), (11154, 23070), (11535, 22308), (12870, 19994), (13842, 18590), (15210, 16918), (15380, 16731)]