21406060

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{167}}^1$

素因数の和:235

約数の個数: 96

約数和(自身を含む): 53343360

約数和(自身を除く): 31937300

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 29, 34, 52, 58, 65, 68, 85, 116, 130, 145, 167, 170, 221, 260, 290, 334, 340, 377, 442, 493, 580, 668, 754, 835, 884, 986, 1105, 1508, 1670, 1885, 1972, 2171, 2210, 2465, 2839, 3340, 3770, 4342, 4420, 4843, 4930, 5678, 6409, 7540, 8684, 9686, 9860, 10855, 11356, 12818, 14195, 19372, 21710, 24215, 25636, 28390, 32045, 36907, 43420, 48430, 56780, 62959, 64090, 73814, 82331, 96860, 125918, 128180, 147628, 164662, 184535, 251836, 314795, 329324, 369070, 411655, 629590, 738140, 823310, 1070303, 1259180, 1646620, 2140606, 4281212, 5351515, 10703030, 21406060]

約数ペア:

[(1, 21406060), (2, 10703030), (4, 5351515), (5, 4281212), (10, 2140606), (13, 1646620), (17, 1259180), (20, 1070303), (26, 823310), (29, 738140), (34, 629590), (52, 411655), (58, 369070), (65, 329324), (68, 314795), (85, 251836), (116, 184535), (130, 164662), (145, 147628), (167, 128180), (170, 125918), (221, 96860), (260, 82331), (290, 73814), (334, 64090), (340, 62959), (377, 56780), (442, 48430), (493, 43420), (580, 36907), (668, 32045), (754, 28390), (835, 25636), (884, 24215), (986, 21710), (1105, 19372), (1508, 14195), (1670, 12818), (1885, 11356), (1972, 10855), (2171, 9860), (2210, 9686), (2465, 8684), (2839, 7540), (3340, 6409), (3770, 5678), (4342, 4930), (4420, 4843)]