161388760

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{310363}}^1$

素因数の和:310387

約数の個数: 32

約数和(自身を含む): 391058640

約数和(自身を除く): 229669880

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 310363, 620726, 1241452, 1551815, 2482904, 3103630, 4034719, 6207260, 8069438, 12414520, 16138876, 20173595, 32277752, 40347190, 80694380, 161388760]

約数ペア:

[(1, 161388760), (2, 80694380), (4, 40347190), (5, 32277752), (8, 20173595), (10, 16138876), (13, 12414520), (20, 8069438), (26, 6207260), (40, 4034719), (52, 3103630), (65, 2482904), (104, 1551815), (130, 1241452), (260, 620726), (520, 310363)]