20364080

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{317}}^1$

素因数の和:414

約数の個数: 80

約数和(自身を含む): 52523424

約数和(自身を除く): 32159344

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 73, 80, 88, 110, 146, 176, 220, 292, 317, 365, 440, 584, 634, 730, 803, 880, 1168, 1268, 1460, 1585, 1606, 2536, 2920, 3170, 3212, 3487, 4015, 5072, 5840, 6340, 6424, 6974, 8030, 12680, 12848, 13948, 16060, 17435, 23141, 25360, 27896, 32120, 34870, 46282, 55792, 64240, 69740, 92564, 115705, 139480, 185128, 231410, 254551, 278960, 370256, 462820, 509102, 925640, 1018204, 1272755, 1851280, 2036408, 2545510, 4072816, 5091020, 10182040, 20364080]

約数ペア:

[(1, 20364080), (2, 10182040), (4, 5091020), (5, 4072816), (8, 2545510), (10, 2036408), (11, 1851280), (16, 1272755), (20, 1018204), (22, 925640), (40, 509102), (44, 462820), (55, 370256), (73, 278960), (80, 254551), (88, 231410), (110, 185128), (146, 139480), (176, 115705), (220, 92564), (292, 69740), (317, 64240), (365, 55792), (440, 46282), (584, 34870), (634, 32120), (730, 27896), (803, 25360), (880, 23141), (1168, 17435), (1268, 16060), (1460, 13948), (1585, 12848), (1606, 12680), (2536, 8030), (2920, 6974), (3170, 6424), (3212, 6340), (3487, 5840), (4015, 5072)]