20107431040

素因数分解:

$2^7\times 5^1\times {\mathrm{131}}^1\times {\mathrm{239831}}^1$

素因数の和:239981

約数の個数: 64

約数和(自身を含む): 48436470720

約数和(自身を除く): 28329039680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 131, 160, 262, 320, 524, 640, 655, 1048, 1310, 2096, 2620, 4192, 5240, 8384, 10480, 16768, 20960, 41920, 83840, 239831, 479662, 959324, 1199155, 1918648, 2398310, 3837296, 4796620, 7674592, 9593240, 15349184, 19186480, 30698368, 31417861, 38372960, 62835722, 76745920, 125671444, 153491840, 157089305, 251342888, 314178610, 502685776, 628357220, 1005371552, 1256714440, 2010743104, 2513428880, 4021486208, 5026857760, 10053715520, 20107431040]

約数ペア:

[(1, 20107431040), (2, 10053715520), (4, 5026857760), (5, 4021486208), (8, 2513428880), (10, 2010743104), (16, 1256714440), (20, 1005371552), (32, 628357220), (40, 502685776), (64, 314178610), (80, 251342888), (128, 157089305), (131, 153491840), (160, 125671444), (262, 76745920), (320, 62835722), (524, 38372960), (640, 31417861), (655, 30698368), (1048, 19186480), (1310, 15349184), (2096, 9593240), (2620, 7674592), (4192, 4796620), (5240, 3837296), (8384, 2398310), (10480, 1918648), (16768, 1199155), (20960, 959324), (41920, 479662), (83840, 239831)]