31492280

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{233}}^1$

素因数の和:384

約数の個数: 64

約数和(自身を含む): 74131200

約数和(自身を除く): 42638920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 109, 124, 155, 218, 233, 248, 310, 436, 466, 545, 620, 872, 932, 1090, 1165, 1240, 1864, 2180, 2330, 3379, 4360, 4660, 6758, 7223, 9320, 13516, 14446, 16895, 25397, 27032, 28892, 33790, 36115, 50794, 57784, 67580, 72230, 101588, 126985, 135160, 144460, 203176, 253970, 288920, 507940, 787307, 1015880, 1574614, 3149228, 3936535, 6298456, 7873070, 15746140, 31492280]

約数ペア:

[(1, 31492280), (2, 15746140), (4, 7873070), (5, 6298456), (8, 3936535), (10, 3149228), (20, 1574614), (31, 1015880), (40, 787307), (62, 507940), (109, 288920), (124, 253970), (155, 203176), (218, 144460), (233, 135160), (248, 126985), (310, 101588), (436, 72230), (466, 67580), (545, 57784), (620, 50794), (872, 36115), (932, 33790), (1090, 28892), (1165, 27032), (1240, 25397), (1864, 16895), (2180, 14446), (2330, 13516), (3379, 9320), (4360, 7223), (4660, 6758)]