18391516

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1$

素因数の和:155

約数の個数: 72

約数和(自身を含む): 39623360

約数和(自身を除く): 21231844

約数列:

[1, 2, 4, 11, 13, 22, 26, 37, 44, 52, 74, 79, 121, 143, 148, 158, 242, 286, 316, 407, 481, 484, 572, 814, 869, 962, 1027, 1573, 1628, 1738, 1924, 2054, 2923, 3146, 3476, 4108, 4477, 5291, 5846, 6292, 8954, 9559, 10582, 11297, 11692, 17908, 19118, 21164, 22594, 32153, 37999, 38236, 45188, 58201, 64306, 75998, 116402, 124267, 128612, 151996, 232804, 248534, 353683, 417989, 497068, 707366, 835978, 1414732, 1671956, 4597879, 9195758, 18391516]

約数ペア:

[(1, 18391516), (2, 9195758), (4, 4597879), (11, 1671956), (13, 1414732), (22, 835978), (26, 707366), (37, 497068), (44, 417989), (52, 353683), (74, 248534), (79, 232804), (121, 151996), (143, 128612), (148, 124267), (158, 116402), (242, 75998), (286, 64306), (316, 58201), (407, 45188), (481, 38236), (484, 37999), (572, 32153), (814, 22594), (869, 21164), (962, 19118), (1027, 17908), (1573, 11692), (1628, 11297), (1738, 10582), (1924, 9559), (2054, 8954), (2923, 6292), (3146, 5846), (3476, 5291), (4108, 4477)]