20340400

素因数分解:

$2^4\times 5^2\times {\mathrm{211}}^1\times {\mathrm{241}}^1$

素因数の和:470

約数の個数: 60

約数和(自身を含む): 49303144

約数和(自身を除く): 28962744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 211, 241, 400, 422, 482, 844, 964, 1055, 1205, 1688, 1928, 2110, 2410, 3376, 3856, 4220, 4820, 5275, 6025, 8440, 9640, 10550, 12050, 16880, 19280, 21100, 24100, 42200, 48200, 50851, 84400, 96400, 101702, 203404, 254255, 406808, 508510, 813616, 1017020, 1271275, 2034040, 2542550, 4068080, 5085100, 10170200, 20340400]

約数ペア:

[(1, 20340400), (2, 10170200), (4, 5085100), (5, 4068080), (8, 2542550), (10, 2034040), (16, 1271275), (20, 1017020), (25, 813616), (40, 508510), (50, 406808), (80, 254255), (100, 203404), (200, 101702), (211, 96400), (241, 84400), (400, 50851), (422, 48200), (482, 42200), (844, 24100), (964, 21100), (1055, 19280), (1205, 16880), (1688, 12050), (1928, 10550), (2110, 9640), (2410, 8440), (3376, 6025), (3856, 5275), (4220, 4820)]