163905980

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{23893}}^1$

素因数の和:23923

約数の個数: 48

約数和(自身を含む): 401419200

約数和(自身を除く): 237513220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 3430, 6860, 23893, 47786, 95572, 119465, 167251, 238930, 334502, 477860, 669004, 836255, 1170757, 1672510, 2341514, 3345020, 4683028, 5853785, 8195299, 11707570, 16390598, 23415140, 32781196, 40976495, 81952990, 163905980]

約数ペア:

[(1, 163905980), (2, 81952990), (4, 40976495), (5, 32781196), (7, 23415140), (10, 16390598), (14, 11707570), (20, 8195299), (28, 5853785), (35, 4683028), (49, 3345020), (70, 2341514), (98, 1672510), (140, 1170757), (196, 836255), (245, 669004), (343, 477860), (490, 334502), (686, 238930), (980, 167251), (1372, 119465), (1715, 95572), (3430, 47786), (6860, 23893)]