8131940

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{211}}^1$

素因数の和:308

約数の個数: 48

約数和(自身を含む): 17950464

約数和(自身を除く): 9818524

約数列:

[1, 2, 4, 5, 10, 20, 41, 47, 82, 94, 164, 188, 205, 211, 235, 410, 422, 470, 820, 844, 940, 1055, 1927, 2110, 3854, 4220, 7708, 8651, 9635, 9917, 17302, 19270, 19834, 34604, 38540, 39668, 43255, 49585, 86510, 99170, 173020, 198340, 406597, 813194, 1626388, 2032985, 4065970, 8131940]

約数ペア:

[(1, 8131940), (2, 4065970), (4, 2032985), (5, 1626388), (10, 813194), (20, 406597), (41, 198340), (47, 173020), (82, 99170), (94, 86510), (164, 49585), (188, 43255), (205, 39668), (211, 38540), (235, 34604), (410, 19834), (422, 19270), (470, 17302), (820, 9917), (844, 9635), (940, 8651), (1055, 7708), (1927, 4220), (2110, 3854)]