257681580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19433}}^1$

素因数の和:19475

約数の個数: 96

約数和(自身を含む): 822757824

約数和(自身を除く): 565076244

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 17, 20, 26, 30, 34, 39, 51, 52, 60, 65, 68, 78, 85, 102, 130, 156, 170, 195, 204, 221, 255, 260, 340, 390, 442, 510, 663, 780, 884, 1020, 1105, 1326, 2210, 2652, 3315, 4420, 6630, 13260, 19433, 38866, 58299, 77732, 97165, 116598, 194330, 233196, 252629, 291495, 330361, 388660, 505258, 582990, 660722, 757887, 991083, 1010516, 1165980, 1263145, 1321444, 1515774, 1651805, 1982166, 2526290, 3031548, 3303610, 3789435, 3964332, 4294693, 4955415, 5052580, 6607220, 7578870, 8589386, 9910830, 12884079, 15157740, 17178772, 19821660, 21473465, 25768158, 42946930, 51536316, 64420395, 85893860, 128840790, 257681580]

約数ペア:

[(1, 257681580), (2, 128840790), (3, 85893860), (4, 64420395), (5, 51536316), (6, 42946930), (10, 25768158), (12, 21473465), (13, 19821660), (15, 17178772), (17, 15157740), (20, 12884079), (26, 9910830), (30, 8589386), (34, 7578870), (39, 6607220), (51, 5052580), (52, 4955415), (60, 4294693), (65, 3964332), (68, 3789435), (78, 3303610), (85, 3031548), (102, 2526290), (130, 1982166), (156, 1651805), (170, 1515774), (195, 1321444), (204, 1263145), (221, 1165980), (255, 1010516), (260, 991083), (340, 757887), (390, 660722), (442, 582990), (510, 505258), (663, 388660), (780, 330361), (884, 291495), (1020, 252629), (1105, 233196), (1326, 194330), (2210, 116598), (2652, 97165), (3315, 77732), (4420, 58299), (6630, 38866), (13260, 19433)]