8623420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1951}}^1$

素因数の和:1990

約数の個数: 48

約数和(自身を含む): 20659968

約数和(自身を除く): 12036548

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 1951, 2210, 3902, 4420, 7804, 9755, 19510, 25363, 33167, 39020, 50726, 66334, 101452, 126815, 132668, 165835, 253630, 331670, 431171, 507260, 663340, 862342, 1724684, 2155855, 4311710, 8623420]

約数ペア:

[(1, 8623420), (2, 4311710), (4, 2155855), (5, 1724684), (10, 862342), (13, 663340), (17, 507260), (20, 431171), (26, 331670), (34, 253630), (52, 165835), (65, 132668), (68, 126815), (85, 101452), (130, 66334), (170, 50726), (221, 39020), (260, 33167), (340, 25363), (442, 19510), (884, 9755), (1105, 7804), (1951, 4420), (2210, 3902)]