12901720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{577}}^1$

素因数の和:644

約数の個数: 64

約数和(自身を含む): 32044320

約数和(自身を除く): 19142600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 43, 52, 65, 86, 104, 130, 172, 215, 260, 344, 430, 520, 559, 577, 860, 1118, 1154, 1720, 2236, 2308, 2795, 2885, 4472, 4616, 5590, 5770, 7501, 11180, 11540, 15002, 22360, 23080, 24811, 30004, 37505, 49622, 60008, 75010, 99244, 124055, 150020, 198488, 248110, 300040, 322543, 496220, 645086, 992440, 1290172, 1612715, 2580344, 3225430, 6450860, 12901720]

約数ペア:

[(1, 12901720), (2, 6450860), (4, 3225430), (5, 2580344), (8, 1612715), (10, 1290172), (13, 992440), (20, 645086), (26, 496220), (40, 322543), (43, 300040), (52, 248110), (65, 198488), (86, 150020), (104, 124055), (130, 99244), (172, 75010), (215, 60008), (260, 49622), (344, 37505), (430, 30004), (520, 24811), (559, 23080), (577, 22360), (860, 15002), (1118, 11540), (1154, 11180), (1720, 7501), (2236, 5770), (2308, 5590), (2795, 4616), (2885, 4472)]