21648120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13877}}^1$

素因数の和:13904

約数の個数: 64

約数和(自身を含む): 69945120

約数和(自身を除く): 48297000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 13877, 27754, 41631, 55508, 69385, 83262, 111016, 138770, 166524, 180401, 208155, 277540, 333048, 360802, 416310, 541203, 555080, 721604, 832620, 902005, 1082406, 1443208, 1665240, 1804010, 2164812, 2706015, 3608020, 4329624, 5412030, 7216040, 10824060, 21648120]

約数ペア:

[(1, 21648120), (2, 10824060), (3, 7216040), (4, 5412030), (5, 4329624), (6, 3608020), (8, 2706015), (10, 2164812), (12, 1804010), (13, 1665240), (15, 1443208), (20, 1082406), (24, 902005), (26, 832620), (30, 721604), (39, 555080), (40, 541203), (52, 416310), (60, 360802), (65, 333048), (78, 277540), (104, 208155), (120, 180401), (130, 166524), (156, 138770), (195, 111016), (260, 83262), (312, 69385), (390, 55508), (520, 41631), (780, 27754), (1560, 13877)]