1388456420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{367}}^1\times {\mathrm{14551}}^1$

素因数の和:14940

約数の個数: 48

約数和(自身を含む): 3148819968

約数和(自身を除く): 1760363548

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 367, 734, 1468, 1835, 3670, 4771, 7340, 9542, 14551, 19084, 23855, 29102, 47710, 58204, 72755, 95420, 145510, 189163, 291020, 378326, 756652, 945815, 1891630, 3783260, 5340217, 10680434, 21360868, 26701085, 53402170, 69422821, 106804340, 138845642, 277691284, 347114105, 694228210, 1388456420]

約数ペア:

[(1, 1388456420), (2, 694228210), (4, 347114105), (5, 277691284), (10, 138845642), (13, 106804340), (20, 69422821), (26, 53402170), (52, 26701085), (65, 21360868), (130, 10680434), (260, 5340217), (367, 3783260), (734, 1891630), (1468, 945815), (1835, 756652), (3670, 378326), (4771, 291020), (7340, 189163), (9542, 145510), (14551, 95420), (19084, 72755), (23855, 58204), (29102, 47710)]