71631920

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{21839}}^1$

素因数の和:21893

約数の個数: 40

約数和(自身を含む): 170614080

約数和(自身を除く): 98982160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 21839, 43678, 87356, 109195, 174712, 218390, 349424, 436780, 873560, 895399, 1747120, 1790798, 3581596, 4476995, 7163192, 8953990, 14326384, 17907980, 35815960, 71631920]

約数ペア:

[(1, 71631920), (2, 35815960), (4, 17907980), (5, 14326384), (8, 8953990), (10, 7163192), (16, 4476995), (20, 3581596), (40, 1790798), (41, 1747120), (80, 895399), (82, 873560), (164, 436780), (205, 349424), (328, 218390), (410, 174712), (656, 109195), (820, 87356), (1640, 43678), (3280, 21839)]