72981980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^2\times {\mathrm{4339}}^1$

素因数の和:4406

約数の個数: 36

約数和(自身を含む): 158765880

約数和(自身を除く): 85783900

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 841, 1682, 3364, 4205, 4339, 8410, 8678, 16820, 17356, 21695, 43390, 86780, 125831, 251662, 503324, 629155, 1258310, 2516620, 3649099, 7298198, 14596396, 18245495, 36490990, 72981980]

約数ペア:

[(1, 72981980), (2, 36490990), (4, 18245495), (5, 14596396), (10, 7298198), (20, 3649099), (29, 2516620), (58, 1258310), (116, 629155), (145, 503324), (290, 251662), (580, 125831), (841, 86780), (1682, 43390), (3364, 21695), (4205, 17356), (4339, 16820), (8410, 8678)]