19909962

素因数分解:

$2^1\times 3^5\times {\mathrm{71}}^1\times {\mathrm{577}}^1$

素因数の和:665

約数の個数: 48

約数和(自身を含む): 45444672

約数和(自身を除く): 25534710

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 71, 81, 142, 162, 213, 243, 426, 486, 577, 639, 1154, 1278, 1731, 1917, 3462, 3834, 5193, 5751, 10386, 11502, 15579, 17253, 31158, 34506, 40967, 46737, 81934, 93474, 122901, 140211, 245802, 280422, 368703, 737406, 1106109, 2212218, 3318327, 6636654, 9954981, 19909962]

約数ペア:

[(1, 19909962), (2, 9954981), (3, 6636654), (6, 3318327), (9, 2212218), (18, 1106109), (27, 737406), (54, 368703), (71, 280422), (81, 245802), (142, 140211), (162, 122901), (213, 93474), (243, 81934), (426, 46737), (486, 40967), (577, 34506), (639, 31158), (1154, 17253), (1278, 15579), (1731, 11502), (1917, 10386), (3462, 5751), (3834, 5193)]