7870180

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 17640000

約数和(自身を除く): 9769820

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 139, 149, 190, 278, 298, 380, 556, 596, 695, 745, 1390, 1490, 2641, 2780, 2831, 2980, 5282, 5662, 10564, 11324, 13205, 14155, 20711, 26410, 28310, 41422, 52820, 56620, 82844, 103555, 207110, 393509, 414220, 787018, 1574036, 1967545, 3935090, 7870180]

約数ペア:

[(1, 7870180), (2, 3935090), (4, 1967545), (5, 1574036), (10, 787018), (19, 414220), (20, 393509), (38, 207110), (76, 103555), (95, 82844), (139, 56620), (149, 52820), (190, 41422), (278, 28310), (298, 26410), (380, 20711), (556, 14155), (596, 13205), (695, 11324), (745, 10564), (1390, 5662), (1490, 5282), (2641, 2980), (2780, 2831)]