20215860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{379}}^1$

素因数の和:525

約数の個数: 96

約数和(自身を含む): 65372160

約数和(自身を除く): 45156300

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 127, 140, 210, 254, 379, 381, 420, 508, 635, 758, 762, 889, 1137, 1270, 1516, 1524, 1778, 1895, 1905, 2274, 2540, 2653, 2667, 3556, 3790, 3810, 4445, 4548, 5306, 5334, 5685, 7580, 7620, 7959, 8890, 10612, 10668, 11370, 13265, 13335, 15918, 17780, 22740, 26530, 26670, 31836, 39795, 48133, 53060, 53340, 79590, 96266, 144399, 159180, 192532, 240665, 288798, 336931, 481330, 577596, 673862, 721995, 962660, 1010793, 1347724, 1443990, 1684655, 2021586, 2887980, 3369310, 4043172, 5053965, 6738620, 10107930, 20215860]

約数ペア:

[(1, 20215860), (2, 10107930), (3, 6738620), (4, 5053965), (5, 4043172), (6, 3369310), (7, 2887980), (10, 2021586), (12, 1684655), (14, 1443990), (15, 1347724), (20, 1010793), (21, 962660), (28, 721995), (30, 673862), (35, 577596), (42, 481330), (60, 336931), (70, 288798), (84, 240665), (105, 192532), (127, 159180), (140, 144399), (210, 96266), (254, 79590), (379, 53340), (381, 53060), (420, 48133), (508, 39795), (635, 31836), (758, 26670), (762, 26530), (889, 22740), (1137, 17780), (1270, 15918), (1516, 13335), (1524, 13265), (1778, 11370), (1895, 10668), (1905, 10612), (2274, 8890), (2540, 7959), (2653, 7620), (2667, 7580), (3556, 5685), (3790, 5334), (3810, 5306), (4445, 4548)]