21562520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{1453}}^1$

素因数の和:1524

約数の個数: 64

約数和(自身を含む): 56531520

約数和(自身を除く): 34969000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 53, 56, 70, 106, 140, 212, 265, 280, 371, 424, 530, 742, 1060, 1453, 1484, 1855, 2120, 2906, 2968, 3710, 5812, 7265, 7420, 10171, 11624, 14530, 14840, 20342, 29060, 40684, 50855, 58120, 77009, 81368, 101710, 154018, 203420, 308036, 385045, 406840, 539063, 616072, 770090, 1078126, 1540180, 2156252, 2695315, 3080360, 4312504, 5390630, 10781260, 21562520]

約数ペア:

[(1, 21562520), (2, 10781260), (4, 5390630), (5, 4312504), (7, 3080360), (8, 2695315), (10, 2156252), (14, 1540180), (20, 1078126), (28, 770090), (35, 616072), (40, 539063), (53, 406840), (56, 385045), (70, 308036), (106, 203420), (140, 154018), (212, 101710), (265, 81368), (280, 77009), (371, 58120), (424, 50855), (530, 40684), (742, 29060), (1060, 20342), (1453, 14840), (1484, 14530), (1855, 11624), (2120, 10171), (2906, 7420), (2968, 7265), (3710, 5812)]