1640641780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{293}}^1\times {\mathrm{383}}^1$

素因数の和:745

約数の個数: 96

約数和(自身を含む): 3755372544

約数和(自身を除く): 2114730764

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 43, 68, 85, 86, 170, 172, 215, 293, 340, 383, 430, 586, 731, 766, 860, 1172, 1462, 1465, 1532, 1915, 2924, 2930, 3655, 3830, 4981, 5860, 6511, 7310, 7660, 9962, 12599, 13022, 14620, 16469, 19924, 24905, 25198, 26044, 32555, 32938, 49810, 50396, 62995, 65110, 65876, 82345, 99620, 112219, 125990, 130220, 164690, 214183, 224438, 251980, 279973, 329380, 428366, 448876, 559946, 561095, 856732, 1070915, 1119892, 1122190, 1399865, 1907723, 2141830, 2244380, 2799730, 3815446, 4283660, 4825417, 5599460, 7630892, 9538615, 9650834, 19077230, 19301668, 24127085, 38154460, 48254170, 82032089, 96508340, 164064178, 328128356, 410160445, 820320890, 1640641780]

約数ペア:

[(1, 1640641780), (2, 820320890), (4, 410160445), (5, 328128356), (10, 164064178), (17, 96508340), (20, 82032089), (34, 48254170), (43, 38154460), (68, 24127085), (85, 19301668), (86, 19077230), (170, 9650834), (172, 9538615), (215, 7630892), (293, 5599460), (340, 4825417), (383, 4283660), (430, 3815446), (586, 2799730), (731, 2244380), (766, 2141830), (860, 1907723), (1172, 1399865), (1462, 1122190), (1465, 1119892), (1532, 1070915), (1915, 856732), (2924, 561095), (2930, 559946), (3655, 448876), (3830, 428366), (4981, 329380), (5860, 279973), (6511, 251980), (7310, 224438), (7660, 214183), (9962, 164690), (12599, 130220), (13022, 125990), (14620, 112219), (16469, 99620), (19924, 82345), (24905, 65876), (25198, 65110), (26044, 62995), (32555, 50396), (32938, 49810)]