20587984

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{419}}^1$

素因数の和:547

約数の個数: 40

約数和(自身を含む): 41559840

約数和(自身を除く): 20971856

約数列:

[1, 2, 4, 8, 16, 37, 74, 83, 148, 166, 296, 332, 419, 592, 664, 838, 1328, 1676, 3071, 3352, 6142, 6704, 12284, 15503, 24568, 31006, 34777, 49136, 62012, 69554, 124024, 139108, 248048, 278216, 556432, 1286749, 2573498, 5146996, 10293992, 20587984]

約数ペア:

[(1, 20587984), (2, 10293992), (4, 5146996), (8, 2573498), (16, 1286749), (37, 556432), (74, 278216), (83, 248048), (148, 139108), (166, 124024), (296, 69554), (332, 62012), (419, 49136), (592, 34777), (664, 31006), (838, 24568), (1328, 15503), (1676, 12284), (3071, 6704), (3352, 6142)]