18680451980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{227}}^1\times {\mathrm{100357}}^1$

素因数の和:100634

約数の個数: 48

約数和(自身を含む): 40363184736

約数和(自身を除く): 21682732756

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 227, 410, 454, 820, 908, 1135, 2270, 4540, 9307, 18614, 37228, 46535, 93070, 100357, 186140, 200714, 401428, 501785, 1003570, 2007140, 4114637, 8229274, 16458548, 20573185, 22781039, 41146370, 45562078, 82292740, 91124156, 113905195, 227810390, 455620780, 934022599, 1868045198, 3736090396, 4670112995, 9340225990, 18680451980]

約数ペア:

[(1, 18680451980), (2, 9340225990), (4, 4670112995), (5, 3736090396), (10, 1868045198), (20, 934022599), (41, 455620780), (82, 227810390), (164, 113905195), (205, 91124156), (227, 82292740), (410, 45562078), (454, 41146370), (820, 22781039), (908, 20573185), (1135, 16458548), (2270, 8229274), (4540, 4114637), (9307, 2007140), (18614, 1003570), (37228, 501785), (46535, 401428), (93070, 200714), (100357, 186140)]