19730720

素因数分解:

$2^5\times 5^1\times {\mathrm{127}}^1\times {\mathrm{971}}^1$

素因数の和:1113

約数の個数: 48

約数和(自身を含む): 47029248

約数和(自身を除く): 27298528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 127, 160, 254, 508, 635, 971, 1016, 1270, 1942, 2032, 2540, 3884, 4064, 4855, 5080, 7768, 9710, 10160, 15536, 19420, 20320, 31072, 38840, 77680, 123317, 155360, 246634, 493268, 616585, 986536, 1233170, 1973072, 2466340, 3946144, 4932680, 9865360, 19730720]

約数ペア:

[(1, 19730720), (2, 9865360), (4, 4932680), (5, 3946144), (8, 2466340), (10, 1973072), (16, 1233170), (20, 986536), (32, 616585), (40, 493268), (80, 246634), (127, 155360), (160, 123317), (254, 77680), (508, 38840), (635, 31072), (971, 20320), (1016, 19420), (1270, 15536), (1942, 10160), (2032, 9710), (2540, 7768), (3884, 5080), (4064, 4855)]