21264360

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{317}}^1$

素因数の和:387

約数の個数: 128

約数和(自身を含む): 70519680

約数和(自身を除く): 49255320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 43, 52, 60, 65, 78, 86, 104, 120, 129, 130, 156, 172, 195, 215, 258, 260, 312, 317, 344, 390, 430, 516, 520, 559, 634, 645, 780, 860, 951, 1032, 1118, 1268, 1290, 1560, 1585, 1677, 1720, 1902, 2236, 2536, 2580, 2795, 3170, 3354, 3804, 4121, 4472, 4755, 5160, 5590, 6340, 6708, 7608, 8242, 8385, 9510, 11180, 12363, 12680, 13416, 13631, 16484, 16770, 19020, 20605, 22360, 24726, 27262, 32968, 33540, 38040, 40893, 41210, 49452, 54524, 61815, 67080, 68155, 81786, 82420, 98904, 109048, 123630, 136310, 163572, 164840, 177203, 204465, 247260, 272620, 327144, 354406, 408930, 494520, 531609, 545240, 708812, 817860, 886015, 1063218, 1417624, 1635720, 1772030, 2126436, 2658045, 3544060, 4252872, 5316090, 7088120, 10632180, 21264360]

約数ペア:

[(1, 21264360), (2, 10632180), (3, 7088120), (4, 5316090), (5, 4252872), (6, 3544060), (8, 2658045), (10, 2126436), (12, 1772030), (13, 1635720), (15, 1417624), (20, 1063218), (24, 886015), (26, 817860), (30, 708812), (39, 545240), (40, 531609), (43, 494520), (52, 408930), (60, 354406), (65, 327144), (78, 272620), (86, 247260), (104, 204465), (120, 177203), (129, 164840), (130, 163572), (156, 136310), (172, 123630), (195, 109048), (215, 98904), (258, 82420), (260, 81786), (312, 68155), (317, 67080), (344, 61815), (390, 54524), (430, 49452), (516, 41210), (520, 40893), (559, 38040), (634, 33540), (645, 32968), (780, 27262), (860, 24726), (951, 22360), (1032, 20605), (1118, 19020), (1268, 16770), (1290, 16484), (1560, 13631), (1585, 13416), (1677, 12680), (1720, 12363), (1902, 11180), (2236, 9510), (2536, 8385), (2580, 8242), (2795, 7608), (3170, 6708), (3354, 6340), (3804, 5590), (4121, 5160), (4472, 4755)]