28665780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{257}}^1$

素因数の和:306

約数の個数: 144

約数和(自身を含む): 95183424

約数和(自身を除く): 66517644

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 13, 15, 20, 22, 26, 30, 33, 39, 44, 52, 55, 60, 65, 66, 78, 110, 130, 132, 143, 156, 165, 169, 195, 220, 257, 260, 286, 330, 338, 390, 429, 507, 514, 572, 660, 676, 715, 771, 780, 845, 858, 1014, 1028, 1285, 1430, 1542, 1690, 1716, 1859, 2028, 2145, 2535, 2570, 2827, 2860, 3084, 3341, 3380, 3718, 3855, 4290, 5070, 5140, 5577, 5654, 6682, 7436, 7710, 8481, 8580, 9295, 10023, 10140, 11154, 11308, 13364, 14135, 15420, 16705, 16962, 18590, 20046, 22308, 27885, 28270, 33410, 33924, 36751, 37180, 40092, 42405, 43433, 50115, 55770, 56540, 66820, 73502, 84810, 86866, 100230, 110253, 111540, 130299, 147004, 169620, 173732, 183755, 200460, 217165, 220506, 260598, 367510, 434330, 441012, 477763, 521196, 551265, 651495, 735020, 868660, 955526, 1102530, 1302990, 1433289, 1911052, 2205060, 2388815, 2605980, 2866578, 4777630, 5733156, 7166445, 9555260, 14332890, 28665780]

約数ペア:

[(1, 28665780), (2, 14332890), (3, 9555260), (4, 7166445), (5, 5733156), (6, 4777630), (10, 2866578), (11, 2605980), (12, 2388815), (13, 2205060), (15, 1911052), (20, 1433289), (22, 1302990), (26, 1102530), (30, 955526), (33, 868660), (39, 735020), (44, 651495), (52, 551265), (55, 521196), (60, 477763), (65, 441012), (66, 434330), (78, 367510), (110, 260598), (130, 220506), (132, 217165), (143, 200460), (156, 183755), (165, 173732), (169, 169620), (195, 147004), (220, 130299), (257, 111540), (260, 110253), (286, 100230), (330, 86866), (338, 84810), (390, 73502), (429, 66820), (507, 56540), (514, 55770), (572, 50115), (660, 43433), (676, 42405), (715, 40092), (771, 37180), (780, 36751), (845, 33924), (858, 33410), (1014, 28270), (1028, 27885), (1285, 22308), (1430, 20046), (1542, 18590), (1690, 16962), (1716, 16705), (1859, 15420), (2028, 14135), (2145, 13364), (2535, 11308), (2570, 11154), (2827, 10140), (2860, 10023), (3084, 9295), (3341, 8580), (3380, 8481), (3718, 7710), (3855, 7436), (4290, 6682), (5070, 5654), (5140, 5577)]