290734240

素因数分解:

$2^5\times 5^1\times {\mathrm{661}}^1\times {\mathrm{2749}}^1$

素因数の和:3425

約数の個数: 48

約数和(自身を含む): 688149000

約数和(自身を除く): 397414760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 661, 1322, 2644, 2749, 3305, 5288, 5498, 6610, 10576, 10996, 13220, 13745, 21152, 21992, 26440, 27490, 43984, 52880, 54980, 87968, 105760, 109960, 219920, 439840, 1817089, 3634178, 7268356, 9085445, 14536712, 18170890, 29073424, 36341780, 58146848, 72683560, 145367120, 290734240]

約数ペア:

[(1, 290734240), (2, 145367120), (4, 72683560), (5, 58146848), (8, 36341780), (10, 29073424), (16, 18170890), (20, 14536712), (32, 9085445), (40, 7268356), (80, 3634178), (160, 1817089), (661, 439840), (1322, 219920), (2644, 109960), (2749, 105760), (3305, 87968), (5288, 54980), (5498, 52880), (6610, 43984), (10576, 27490), (10996, 26440), (13220, 21992), (13745, 21152)]