2019944240

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{413923}}^1$

素因数の和:413997

約数の個数: 40

約数和(自身を含む): 4773371568

約数和(自身を除く): 2753427328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 413923, 827846, 1655692, 2069615, 3311384, 4139230, 6622768, 8278460, 16556920, 25249303, 33113840, 50498606, 100997212, 126246515, 201994424, 252493030, 403988848, 504986060, 1009972120, 2019944240]

約数ペア:

[(1, 2019944240), (2, 1009972120), (4, 504986060), (5, 403988848), (8, 252493030), (10, 201994424), (16, 126246515), (20, 100997212), (40, 50498606), (61, 33113840), (80, 25249303), (122, 16556920), (244, 8278460), (305, 6622768), (488, 4139230), (610, 3311384), (976, 2069615), (1220, 1655692), (2440, 827846), (4880, 413923)]