28696720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{673}}^1$

素因数の和:740

約数の個数: 80

約数和(自身を含む): 73714032

約数和(自身を除く): 45017312

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 41, 52, 65, 80, 82, 104, 130, 164, 205, 208, 260, 328, 410, 520, 533, 656, 673, 820, 1040, 1066, 1346, 1640, 2132, 2665, 2692, 3280, 3365, 4264, 5330, 5384, 6730, 8528, 8749, 10660, 10768, 13460, 17498, 21320, 26920, 27593, 34996, 42640, 43745, 53840, 55186, 69992, 87490, 110372, 137965, 139984, 174980, 220744, 275930, 349960, 358709, 441488, 551860, 699920, 717418, 1103720, 1434836, 1793545, 2207440, 2869672, 3587090, 5739344, 7174180, 14348360, 28696720]

約数ペア:

[(1, 28696720), (2, 14348360), (4, 7174180), (5, 5739344), (8, 3587090), (10, 2869672), (13, 2207440), (16, 1793545), (20, 1434836), (26, 1103720), (40, 717418), (41, 699920), (52, 551860), (65, 441488), (80, 358709), (82, 349960), (104, 275930), (130, 220744), (164, 174980), (205, 139984), (208, 137965), (260, 110372), (328, 87490), (410, 69992), (520, 55186), (533, 53840), (656, 43745), (673, 42640), (820, 34996), (1040, 27593), (1066, 26920), (1346, 21320), (1640, 17498), (2132, 13460), (2665, 10768), (2692, 10660), (3280, 8749), (3365, 8528), (4264, 6730), (5330, 5384)]