420177020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1\times {\mathrm{181}}^1$

素因数の和:399

約数の個数: 96

約数和(自身を含む): 963144000

約数和(自身を除く): 542966980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 41, 76, 82, 95, 149, 164, 181, 190, 205, 298, 362, 380, 410, 596, 724, 745, 779, 820, 905, 1490, 1558, 1810, 2831, 2980, 3116, 3439, 3620, 3895, 5662, 6109, 6878, 7421, 7790, 11324, 12218, 13756, 14155, 14842, 15580, 17195, 24436, 26969, 28310, 29684, 30545, 34390, 37105, 53938, 56620, 61090, 68780, 74210, 107876, 116071, 122180, 134845, 140999, 148420, 232142, 269690, 281998, 464284, 512411, 539380, 563996, 580355, 704995, 1024822, 1105729, 1160710, 1409990, 2049644, 2211458, 2321420, 2562055, 2819980, 4422916, 5124110, 5528645, 10248220, 11057290, 21008851, 22114580, 42017702, 84035404, 105044255, 210088510, 420177020]

約数ペア:

[(1, 420177020), (2, 210088510), (4, 105044255), (5, 84035404), (10, 42017702), (19, 22114580), (20, 21008851), (38, 11057290), (41, 10248220), (76, 5528645), (82, 5124110), (95, 4422916), (149, 2819980), (164, 2562055), (181, 2321420), (190, 2211458), (205, 2049644), (298, 1409990), (362, 1160710), (380, 1105729), (410, 1024822), (596, 704995), (724, 580355), (745, 563996), (779, 539380), (820, 512411), (905, 464284), (1490, 281998), (1558, 269690), (1810, 232142), (2831, 148420), (2980, 140999), (3116, 134845), (3439, 122180), (3620, 116071), (3895, 107876), (5662, 74210), (6109, 68780), (6878, 61090), (7421, 56620), (7790, 53938), (11324, 37105), (12218, 34390), (13756, 30545), (14155, 29684), (14842, 28310), (15580, 26969), (17195, 24436)]