80972620

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{2141}}^1$

素因数の和:2242

約数の個数: 48

約数和(自身を含む): 178488576

約数和(自身を除く): 97515956

約数列:

[1, 2, 4, 5, 10, 20, 31, 61, 62, 122, 124, 155, 244, 305, 310, 610, 620, 1220, 1891, 2141, 3782, 4282, 7564, 8564, 9455, 10705, 18910, 21410, 37820, 42820, 66371, 130601, 132742, 261202, 265484, 331855, 522404, 653005, 663710, 1306010, 1327420, 2612020, 4048631, 8097262, 16194524, 20243155, 40486310, 80972620]

約数ペア:

[(1, 80972620), (2, 40486310), (4, 20243155), (5, 16194524), (10, 8097262), (20, 4048631), (31, 2612020), (61, 1327420), (62, 1306010), (122, 663710), (124, 653005), (155, 522404), (244, 331855), (305, 265484), (310, 261202), (610, 132742), (620, 130601), (1220, 66371), (1891, 42820), (2141, 37820), (3782, 21410), (4282, 18910), (7564, 10705), (8564, 9455)]