20499340

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{233}}^1$

素因数の和:378

約数の個数: 48

約数和(自身を含む): 44579808

約数和(自身を除く): 24080468

約数列:

[1, 2, 4, 5, 10, 20, 53, 83, 106, 166, 212, 233, 265, 332, 415, 466, 530, 830, 932, 1060, 1165, 1660, 2330, 4399, 4660, 8798, 12349, 17596, 19339, 21995, 24698, 38678, 43990, 49396, 61745, 77356, 87980, 96695, 123490, 193390, 246980, 386780, 1024967, 2049934, 4099868, 5124835, 10249670, 20499340]

約数ペア:

[(1, 20499340), (2, 10249670), (4, 5124835), (5, 4099868), (10, 2049934), (20, 1024967), (53, 386780), (83, 246980), (106, 193390), (166, 123490), (212, 96695), (233, 87980), (265, 77356), (332, 61745), (415, 49396), (466, 43990), (530, 38678), (830, 24698), (932, 21995), (1060, 19339), (1165, 17596), (1660, 12349), (2330, 8798), (4399, 4660)]