80204980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{419}}^1\times {\mathrm{563}}^1$

素因数の和:1008

約数の個数: 48

約数和(自身を含む): 179081280

約数和(自身を除く): 98876300

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 419, 563, 838, 1126, 1676, 2095, 2252, 2815, 4190, 5630, 7123, 8380, 9571, 11260, 14246, 19142, 28492, 35615, 38284, 47855, 71230, 95710, 142460, 191420, 235897, 471794, 943588, 1179485, 2358970, 4010249, 4717940, 8020498, 16040996, 20051245, 40102490, 80204980]

約数ペア:

[(1, 80204980), (2, 40102490), (4, 20051245), (5, 16040996), (10, 8020498), (17, 4717940), (20, 4010249), (34, 2358970), (68, 1179485), (85, 943588), (170, 471794), (340, 235897), (419, 191420), (563, 142460), (838, 95710), (1126, 71230), (1676, 47855), (2095, 38284), (2252, 35615), (2815, 28492), (4190, 19142), (5630, 14246), (7123, 11260), (8380, 9571)]