21558550

素因数分解:

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

素因数の和:1993

約数の個数: 48

約数和(自身を含む): 45747072

約数和(自身を除く): 24188522

約数列:

[1, 2, 5, 10, 13, 17, 25, 26, 34, 50, 65, 85, 130, 170, 221, 325, 425, 442, 650, 850, 1105, 1951, 2210, 3902, 5525, 9755, 11050, 19510, 25363, 33167, 48775, 50726, 66334, 97550, 126815, 165835, 253630, 331670, 431171, 634075, 829175, 862342, 1268150, 1658350, 2155855, 4311710, 10779275, 21558550]

約数ペア:

[(1, 21558550), (2, 10779275), (5, 4311710), (10, 2155855), (13, 1658350), (17, 1268150), (25, 862342), (26, 829175), (34, 634075), (50, 431171), (65, 331670), (85, 253630), (130, 165835), (170, 126815), (221, 97550), (325, 66334), (425, 50726), (442, 48775), (650, 33167), (850, 25363), (1105, 19510), (1951, 11050), (2210, 9755), (3902, 5525)]