81620240

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{6037}}^1$

素因数の和:6076

約数の個数: 60

約数和(自身を含む): 205521444

約数和(自身を除く): 123901204

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 169, 208, 260, 338, 520, 676, 845, 1040, 1352, 1690, 2704, 3380, 6037, 6760, 12074, 13520, 24148, 30185, 48296, 60370, 78481, 96592, 120740, 156962, 241480, 313924, 392405, 482960, 627848, 784810, 1020253, 1255696, 1569620, 2040506, 3139240, 4081012, 5101265, 6278480, 8162024, 10202530, 16324048, 20405060, 40810120, 81620240]

約数ペア:

[(1, 81620240), (2, 40810120), (4, 20405060), (5, 16324048), (8, 10202530), (10, 8162024), (13, 6278480), (16, 5101265), (20, 4081012), (26, 3139240), (40, 2040506), (52, 1569620), (65, 1255696), (80, 1020253), (104, 784810), (130, 627848), (169, 482960), (208, 392405), (260, 313924), (338, 241480), (520, 156962), (676, 120740), (845, 96592), (1040, 78481), (1352, 60370), (1690, 48296), (2704, 30185), (3380, 24148), (6037, 13520), (6760, 12074)]