81045540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{283}}^1$

素因数の和:378

約数の個数: 144

約数和(自身を含む): 259267008

約数和(自身を除く): 178221468

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 37, 43, 45, 60, 74, 86, 90, 111, 129, 148, 172, 180, 185, 215, 222, 258, 283, 333, 370, 387, 430, 444, 516, 555, 566, 645, 666, 740, 774, 849, 860, 1110, 1132, 1290, 1332, 1415, 1548, 1591, 1665, 1698, 1935, 2220, 2547, 2580, 2830, 3182, 3330, 3396, 3870, 4245, 4773, 5094, 5660, 6364, 6660, 7740, 7955, 8490, 9546, 10188, 10471, 12169, 12735, 14319, 15910, 16980, 19092, 20942, 23865, 24338, 25470, 28638, 31413, 31820, 36507, 41884, 47730, 48676, 50940, 52355, 57276, 60845, 62826, 71595, 73014, 94239, 95460, 104710, 109521, 121690, 125652, 143190, 146028, 157065, 182535, 188478, 209420, 219042, 243380, 286380, 314130, 365070, 376956, 438084, 450253, 471195, 547605, 628260, 730140, 900506, 942390, 1095210, 1350759, 1801012, 1884780, 2190420, 2251265, 2701518, 4052277, 4502530, 5403036, 6753795, 8104554, 9005060, 13507590, 16209108, 20261385, 27015180, 40522770, 81045540]

約数ペア:

[(1, 81045540), (2, 40522770), (3, 27015180), (4, 20261385), (5, 16209108), (6, 13507590), (9, 9005060), (10, 8104554), (12, 6753795), (15, 5403036), (18, 4502530), (20, 4052277), (30, 2701518), (36, 2251265), (37, 2190420), (43, 1884780), (45, 1801012), (60, 1350759), (74, 1095210), (86, 942390), (90, 900506), (111, 730140), (129, 628260), (148, 547605), (172, 471195), (180, 450253), (185, 438084), (215, 376956), (222, 365070), (258, 314130), (283, 286380), (333, 243380), (370, 219042), (387, 209420), (430, 188478), (444, 182535), (516, 157065), (555, 146028), (566, 143190), (645, 125652), (666, 121690), (740, 109521), (774, 104710), (849, 95460), (860, 94239), (1110, 73014), (1132, 71595), (1290, 62826), (1332, 60845), (1415, 57276), (1548, 52355), (1591, 50940), (1665, 48676), (1698, 47730), (1935, 41884), (2220, 36507), (2547, 31820), (2580, 31413), (2830, 28638), (3182, 25470), (3330, 24338), (3396, 23865), (3870, 20942), (4245, 19092), (4773, 16980), (5094, 15910), (5660, 14319), (6364, 12735), (6660, 12169), (7740, 10471), (7955, 10188), (8490, 9546)]