1393240

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{571}}^1$

素因数の和:643

約数の個数: 32

約数和(自身を含む): 3191760

約数和(自身を除く): 1798520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 571, 610, 1142, 1220, 2284, 2440, 2855, 4568, 5710, 11420, 22840, 34831, 69662, 139324, 174155, 278648, 348310, 696620, 1393240]

約数ペア:

[(1, 1393240), (2, 696620), (4, 348310), (5, 278648), (8, 174155), (10, 139324), (20, 69662), (40, 34831), (61, 22840), (122, 11420), (244, 5710), (305, 4568), (488, 2855), (571, 2440), (610, 2284), (1142, 1220)]