20488740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{379}}^1$

素因数の和:461

約数の個数: 96

約数和(自身を含む): 62052480

約数和(自身を除く): 41563740

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 53, 60, 68, 85, 102, 106, 159, 170, 204, 212, 255, 265, 318, 340, 379, 510, 530, 636, 758, 795, 901, 1020, 1060, 1137, 1516, 1590, 1802, 1895, 2274, 2703, 3180, 3604, 3790, 4505, 4548, 5406, 5685, 6443, 7580, 9010, 10812, 11370, 12886, 13515, 18020, 19329, 20087, 22740, 25772, 27030, 32215, 38658, 40174, 54060, 60261, 64430, 77316, 80348, 96645, 100435, 120522, 128860, 193290, 200870, 241044, 301305, 341479, 386580, 401740, 602610, 682958, 1024437, 1205220, 1365916, 1707395, 2048874, 3414790, 4097748, 5122185, 6829580, 10244370, 20488740]

約数ペア:

[(1, 20488740), (2, 10244370), (3, 6829580), (4, 5122185), (5, 4097748), (6, 3414790), (10, 2048874), (12, 1707395), (15, 1365916), (17, 1205220), (20, 1024437), (30, 682958), (34, 602610), (51, 401740), (53, 386580), (60, 341479), (68, 301305), (85, 241044), (102, 200870), (106, 193290), (159, 128860), (170, 120522), (204, 100435), (212, 96645), (255, 80348), (265, 77316), (318, 64430), (340, 60261), (379, 54060), (510, 40174), (530, 38658), (636, 32215), (758, 27030), (795, 25772), (901, 22740), (1020, 20087), (1060, 19329), (1137, 18020), (1516, 13515), (1590, 12886), (1802, 11370), (1895, 10812), (2274, 9010), (2703, 7580), (3180, 6443), (3604, 5685), (3790, 5406), (4505, 4548)]