1338609820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^2\times {\mathrm{739}}^1$

素因数の和:883

約数の個数: 72

約数和(自身を含む): 2946197520

約数和(自身を除く): 1607587700

約数列:

[1, 2, 4, 5, 10, 20, 41, 47, 82, 94, 164, 188, 205, 235, 410, 470, 739, 820, 940, 1478, 1927, 2209, 2956, 3695, 3854, 4418, 7390, 7708, 8836, 9635, 11045, 14780, 19270, 22090, 30299, 34733, 38540, 44180, 60598, 69466, 90569, 121196, 138932, 151495, 173665, 181138, 302990, 347330, 362276, 452845, 605980, 694660, 905690, 1424053, 1632451, 1811380, 2848106, 3264902, 5696212, 6529804, 7120265, 8162255, 14240530, 16324510, 28481060, 32649020, 66930491, 133860982, 267721964, 334652455, 669304910, 1338609820]

約数ペア:

[(1, 1338609820), (2, 669304910), (4, 334652455), (5, 267721964), (10, 133860982), (20, 66930491), (41, 32649020), (47, 28481060), (82, 16324510), (94, 14240530), (164, 8162255), (188, 7120265), (205, 6529804), (235, 5696212), (410, 3264902), (470, 2848106), (739, 1811380), (820, 1632451), (940, 1424053), (1478, 905690), (1927, 694660), (2209, 605980), (2956, 452845), (3695, 362276), (3854, 347330), (4418, 302990), (7390, 181138), (7708, 173665), (8836, 151495), (9635, 138932), (11045, 121196), (14780, 90569), (19270, 69466), (22090, 60598), (30299, 44180), (34733, 38540)]