31979720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{359}}^1$

素因数の和:518

約数の個数: 64

約数和(自身を含む): 76982400

約数和(自身を除く): 45002680

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 131, 136, 170, 262, 340, 359, 524, 655, 680, 718, 1048, 1310, 1436, 1795, 2227, 2620, 2872, 3590, 4454, 5240, 6103, 7180, 8908, 11135, 12206, 14360, 17816, 22270, 24412, 30515, 44540, 47029, 48824, 61030, 89080, 94058, 122060, 188116, 235145, 244120, 376232, 470290, 799493, 940580, 1598986, 1881160, 3197972, 3997465, 6395944, 7994930, 15989860, 31979720]

約数ペア:

[(1, 31979720), (2, 15989860), (4, 7994930), (5, 6395944), (8, 3997465), (10, 3197972), (17, 1881160), (20, 1598986), (34, 940580), (40, 799493), (68, 470290), (85, 376232), (131, 244120), (136, 235145), (170, 188116), (262, 122060), (340, 94058), (359, 89080), (524, 61030), (655, 48824), (680, 47029), (718, 44540), (1048, 30515), (1310, 24412), (1436, 22270), (1795, 17816), (2227, 14360), (2620, 12206), (2872, 11135), (3590, 8908), (4454, 7180), (5240, 6103)]