20181427180

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{218461}}^1$

素因数の和:218650

約数の個数: 48

約数和(自身を含む): 44041939200

約数和(自身を除く): 23860512020

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 149, 155, 298, 310, 596, 620, 745, 1490, 2980, 4619, 9238, 18476, 23095, 46190, 92380, 218461, 436922, 873844, 1092305, 2184610, 4369220, 6772291, 13544582, 27089164, 32550689, 33861455, 65101378, 67722910, 130202756, 135445820, 162753445, 325506890, 651013780, 1009071359, 2018142718, 4036285436, 5045356795, 10090713590, 20181427180]

約数ペア:

[(1, 20181427180), (2, 10090713590), (4, 5045356795), (5, 4036285436), (10, 2018142718), (20, 1009071359), (31, 651013780), (62, 325506890), (124, 162753445), (149, 135445820), (155, 130202756), (298, 67722910), (310, 65101378), (596, 33861455), (620, 32550689), (745, 27089164), (1490, 13544582), (2980, 6772291), (4619, 4369220), (9238, 2184610), (18476, 1092305), (23095, 873844), (46190, 436922), (92380, 218461)]