21564120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2531}}^1$

素因数の和:2616

約数の個数: 64

約数和(自身を含む): 65629440

約数和(自身を除く): 44065320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 71, 120, 142, 213, 284, 355, 426, 568, 710, 852, 1065, 1420, 1704, 2130, 2531, 2840, 4260, 5062, 7593, 8520, 10124, 12655, 15186, 20248, 25310, 30372, 37965, 50620, 60744, 75930, 101240, 151860, 179701, 303720, 359402, 539103, 718804, 898505, 1078206, 1437608, 1797010, 2156412, 2695515, 3594020, 4312824, 5391030, 7188040, 10782060, 21564120]

約数ペア:

[(1, 21564120), (2, 10782060), (3, 7188040), (4, 5391030), (5, 4312824), (6, 3594020), (8, 2695515), (10, 2156412), (12, 1797010), (15, 1437608), (20, 1078206), (24, 898505), (30, 718804), (40, 539103), (60, 359402), (71, 303720), (120, 179701), (142, 151860), (213, 101240), (284, 75930), (355, 60744), (426, 50620), (568, 37965), (710, 30372), (852, 25310), (1065, 20248), (1420, 15186), (1704, 12655), (2130, 10124), (2531, 8520), (2840, 7593), (4260, 5062)]