205202920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{167}}^1$

素因数の和:347

約数の個数: 128

約数和(自身を含む): 533433600

約数和(自身を除く): 328230680

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 65, 68, 85, 104, 130, 136, 139, 167, 170, 221, 260, 278, 334, 340, 442, 520, 556, 668, 680, 695, 835, 884, 1105, 1112, 1336, 1390, 1670, 1768, 1807, 2171, 2210, 2363, 2780, 2839, 3340, 3614, 4342, 4420, 4726, 5560, 5678, 6680, 7228, 8684, 8840, 9035, 9452, 10855, 11356, 11815, 14195, 14456, 17368, 18070, 18904, 21710, 22712, 23213, 23630, 28390, 30719, 36140, 36907, 43420, 46426, 47260, 56780, 61438, 72280, 73814, 86840, 92852, 94520, 113560, 116065, 122876, 147628, 153595, 184535, 185704, 232130, 245752, 295256, 301769, 307190, 369070, 394621, 464260, 603538, 614380, 738140, 789242, 928520, 1207076, 1228760, 1476280, 1508845, 1578484, 1973105, 2414152, 3017690, 3156968, 3946210, 5130073, 6035380, 7892420, 10260146, 12070760, 15784840, 20520292, 25650365, 41040584, 51300730, 102601460, 205202920]

約数ペア:

[(1, 205202920), (2, 102601460), (4, 51300730), (5, 41040584), (8, 25650365), (10, 20520292), (13, 15784840), (17, 12070760), (20, 10260146), (26, 7892420), (34, 6035380), (40, 5130073), (52, 3946210), (65, 3156968), (68, 3017690), (85, 2414152), (104, 1973105), (130, 1578484), (136, 1508845), (139, 1476280), (167, 1228760), (170, 1207076), (221, 928520), (260, 789242), (278, 738140), (334, 614380), (340, 603538), (442, 464260), (520, 394621), (556, 369070), (668, 307190), (680, 301769), (695, 295256), (835, 245752), (884, 232130), (1105, 185704), (1112, 184535), (1336, 153595), (1390, 147628), (1670, 122876), (1768, 116065), (1807, 113560), (2171, 94520), (2210, 92852), (2363, 86840), (2780, 73814), (2839, 72280), (3340, 61438), (3614, 56780), (4342, 47260), (4420, 46426), (4726, 43420), (5560, 36907), (5678, 36140), (6680, 30719), (7228, 28390), (8684, 23630), (8840, 23213), (9035, 22712), (9452, 21710), (10855, 18904), (11356, 18070), (11815, 17368), (14195, 14456)]