20748840

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1453}}^1$

素因数の和:1491

約数の個数: 128

約数和(自身を含む): 75375360

約数和(自身を除く): 54626520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 17, 20, 21, 24, 28, 30, 34, 35, 40, 42, 51, 56, 60, 68, 70, 84, 85, 102, 105, 119, 120, 136, 140, 168, 170, 204, 210, 238, 255, 280, 340, 357, 408, 420, 476, 510, 595, 680, 714, 840, 952, 1020, 1190, 1428, 1453, 1785, 2040, 2380, 2856, 2906, 3570, 4359, 4760, 5812, 7140, 7265, 8718, 10171, 11624, 14280, 14530, 17436, 20342, 21795, 24701, 29060, 30513, 34872, 40684, 43590, 49402, 50855, 58120, 61026, 74103, 81368, 87180, 98804, 101710, 122052, 123505, 148206, 152565, 172907, 174360, 197608, 203420, 244104, 247010, 296412, 305130, 345814, 370515, 406840, 494020, 518721, 592824, 610260, 691628, 741030, 864535, 988040, 1037442, 1220520, 1383256, 1482060, 1729070, 2074884, 2593605, 2964120, 3458140, 4149768, 5187210, 6916280, 10374420, 20748840]

約数ペア:

[(1, 20748840), (2, 10374420), (3, 6916280), (4, 5187210), (5, 4149768), (6, 3458140), (7, 2964120), (8, 2593605), (10, 2074884), (12, 1729070), (14, 1482060), (15, 1383256), (17, 1220520), (20, 1037442), (21, 988040), (24, 864535), (28, 741030), (30, 691628), (34, 610260), (35, 592824), (40, 518721), (42, 494020), (51, 406840), (56, 370515), (60, 345814), (68, 305130), (70, 296412), (84, 247010), (85, 244104), (102, 203420), (105, 197608), (119, 174360), (120, 172907), (136, 152565), (140, 148206), (168, 123505), (170, 122052), (204, 101710), (210, 98804), (238, 87180), (255, 81368), (280, 74103), (340, 61026), (357, 58120), (408, 50855), (420, 49402), (476, 43590), (510, 40684), (595, 34872), (680, 30513), (714, 29060), (840, 24701), (952, 21795), (1020, 20342), (1190, 17436), (1428, 14530), (1453, 14280), (1785, 11624), (2040, 10171), (2380, 8718), (2856, 7265), (2906, 7140), (3570, 5812), (4359, 4760)]