20713480

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{367}}^1$

素因数の和:478

約数の個数: 64

約数和(自身を含む): 50077440

約数和(自身を除く): 29363960

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 83, 85, 136, 166, 170, 332, 340, 367, 415, 664, 680, 734, 830, 1411, 1468, 1660, 1835, 2822, 2936, 3320, 3670, 5644, 6239, 7055, 7340, 11288, 12478, 14110, 14680, 24956, 28220, 30461, 31195, 49912, 56440, 60922, 62390, 121844, 124780, 152305, 243688, 249560, 304610, 517837, 609220, 1035674, 1218440, 2071348, 2589185, 4142696, 5178370, 10356740, 20713480]

約数ペア:

[(1, 20713480), (2, 10356740), (4, 5178370), (5, 4142696), (8, 2589185), (10, 2071348), (17, 1218440), (20, 1035674), (34, 609220), (40, 517837), (68, 304610), (83, 249560), (85, 243688), (136, 152305), (166, 124780), (170, 121844), (332, 62390), (340, 60922), (367, 56440), (415, 49912), (664, 31195), (680, 30461), (734, 28220), (830, 24956), (1411, 14680), (1468, 14110), (1660, 12478), (1835, 11288), (2822, 7340), (2936, 7055), (3320, 6239), (3670, 5644)]