21470280

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13763}}^1$

素因数の和:13790

約数の個数: 64

約数和(自身を含む): 69370560

約数和(自身を除く): 47900280

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, 13763, 27526, 41289, 55052, 68815, 82578, 110104, 137630, 165156, 178919, 206445, 275260, 330312, 357838, 412890, 536757, 550520, 715676, 825780, 894595, 1073514, 1431352, 1651560, 1789190, 2147028, 2683785, 3578380, 4294056, 5367570, 7156760, 10735140, 21470280]

約数ペア:

[(1, 21470280), (2, 10735140), (3, 7156760), (4, 5367570), (5, 4294056), (6, 3578380), (8, 2683785), (10, 2147028), (12, 1789190), (13, 1651560), (15, 1431352), (20, 1073514), (24, 894595), (26, 825780), (30, 715676), (39, 550520), (40, 536757), (52, 412890), (60, 357838), (65, 330312), (78, 275260), (104, 206445), (120, 178919), (130, 165156), (156, 137630), (195, 110104), (260, 82578), (312, 68815), (390, 55052), (520, 41289), (780, 27526), (1560, 13763)]