81855540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{34981}}^1$

素因数の和:35009

約数の個数: 72

約数和(自身を含む): 267402408

約数和(自身を除く): 185546868

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 34981, 69962, 104943, 139924, 174905, 209886, 314829, 349810, 419772, 454753, 524715, 629658, 699620, 909506, 1049430, 1259316, 1364259, 1574145, 1819012, 2098860, 2273765, 2728518, 3148290, 4092777, 4547530, 5457036, 6296580, 6821295, 8185554, 9095060, 13642590, 16371108, 20463885, 27285180, 40927770, 81855540]

約数ペア:

[(1, 81855540), (2, 40927770), (3, 27285180), (4, 20463885), (5, 16371108), (6, 13642590), (9, 9095060), (10, 8185554), (12, 6821295), (13, 6296580), (15, 5457036), (18, 4547530), (20, 4092777), (26, 3148290), (30, 2728518), (36, 2273765), (39, 2098860), (45, 1819012), (52, 1574145), (60, 1364259), (65, 1259316), (78, 1049430), (90, 909506), (117, 699620), (130, 629658), (156, 524715), (180, 454753), (195, 419772), (234, 349810), (260, 314829), (390, 209886), (468, 174905), (585, 139924), (780, 104943), (1170, 69962), (2340, 34981)]