28056860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^2$

素因数の和:171

約数の個数: 72

約数和(自身を含む): 66627456

約数和(自身を除く): 38570596

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 59, 62, 65, 118, 124, 130, 155, 236, 260, 295, 310, 403, 590, 620, 767, 806, 1180, 1534, 1612, 1829, 2015, 3068, 3481, 3658, 3835, 4030, 6962, 7316, 7670, 8060, 9145, 13924, 15340, 17405, 18290, 23777, 34810, 36580, 45253, 47554, 69620, 90506, 95108, 107911, 118885, 181012, 215822, 226265, 237770, 431644, 452530, 475540, 539555, 905060, 1079110, 1402843, 2158220, 2805686, 5611372, 7014215, 14028430, 28056860]

約数ペア:

[(1, 28056860), (2, 14028430), (4, 7014215), (5, 5611372), (10, 2805686), (13, 2158220), (20, 1402843), (26, 1079110), (31, 905060), (52, 539555), (59, 475540), (62, 452530), (65, 431644), (118, 237770), (124, 226265), (130, 215822), (155, 181012), (236, 118885), (260, 107911), (295, 95108), (310, 90506), (403, 69620), (590, 47554), (620, 45253), (767, 36580), (806, 34810), (1180, 23777), (1534, 18290), (1612, 17405), (1829, 15340), (2015, 13924), (3068, 9145), (3481, 8060), (3658, 7670), (3835, 7316), (4030, 6962)]