64741640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{479}}^1$

素因数の和:630

約数の個数: 64

約数和(自身を含む): 152064000

約数和(自身を除く): 87322360

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 109, 124, 155, 218, 248, 310, 436, 479, 545, 620, 872, 958, 1090, 1240, 1916, 2180, 2395, 3379, 3832, 4360, 4790, 6758, 9580, 13516, 14849, 16895, 19160, 27032, 29698, 33790, 52211, 59396, 67580, 74245, 104422, 118792, 135160, 148490, 208844, 261055, 296980, 417688, 522110, 593960, 1044220, 1618541, 2088440, 3237082, 6474164, 8092705, 12948328, 16185410, 32370820, 64741640]

約数ペア:

[(1, 64741640), (2, 32370820), (4, 16185410), (5, 12948328), (8, 8092705), (10, 6474164), (20, 3237082), (31, 2088440), (40, 1618541), (62, 1044220), (109, 593960), (124, 522110), (155, 417688), (218, 296980), (248, 261055), (310, 208844), (436, 148490), (479, 135160), (545, 118792), (620, 104422), (872, 74245), (958, 67580), (1090, 59396), (1240, 52211), (1916, 33790), (2180, 29698), (2395, 27032), (3379, 19160), (3832, 16895), (4360, 14849), (4790, 13516), (6758, 9580)]