20837988

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{431}}^1$

素因数の和:537

約数の個数: 72

約数和(自身を含む): 56609280

約数和(自身を除く): 35771292

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 51, 68, 79, 102, 153, 158, 204, 237, 306, 316, 431, 474, 612, 711, 862, 948, 1293, 1343, 1422, 1724, 2586, 2686, 2844, 3879, 4029, 5172, 5372, 7327, 7758, 8058, 12087, 14654, 15516, 16116, 21981, 24174, 29308, 34049, 43962, 48348, 65943, 68098, 87924, 102147, 131886, 136196, 204294, 263772, 306441, 408588, 578833, 612882, 1157666, 1225764, 1736499, 2315332, 3472998, 5209497, 6945996, 10418994, 20837988]

約数ペア:

[(1, 20837988), (2, 10418994), (3, 6945996), (4, 5209497), (6, 3472998), (9, 2315332), (12, 1736499), (17, 1225764), (18, 1157666), (34, 612882), (36, 578833), (51, 408588), (68, 306441), (79, 263772), (102, 204294), (153, 136196), (158, 131886), (204, 102147), (237, 87924), (306, 68098), (316, 65943), (431, 48348), (474, 43962), (612, 34049), (711, 29308), (862, 24174), (948, 21981), (1293, 16116), (1343, 15516), (1422, 14654), (1724, 12087), (2586, 8058), (2686, 7758), (2844, 7327), (3879, 5372), (4029, 5172)]