31785880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1861}}^1$

素因数の和:1940

約数の個数: 64

約数和(自身を含む): 83119680

約数和(自身を除く): 51333800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 61, 70, 122, 140, 244, 280, 305, 427, 488, 610, 854, 1220, 1708, 1861, 2135, 2440, 3416, 3722, 4270, 7444, 8540, 9305, 13027, 14888, 17080, 18610, 26054, 37220, 52108, 65135, 74440, 104216, 113521, 130270, 227042, 260540, 454084, 521080, 567605, 794647, 908168, 1135210, 1589294, 2270420, 3178588, 3973235, 4540840, 6357176, 7946470, 15892940, 31785880]

約数ペア:

[(1, 31785880), (2, 15892940), (4, 7946470), (5, 6357176), (7, 4540840), (8, 3973235), (10, 3178588), (14, 2270420), (20, 1589294), (28, 1135210), (35, 908168), (40, 794647), (56, 567605), (61, 521080), (70, 454084), (122, 260540), (140, 227042), (244, 130270), (280, 113521), (305, 104216), (427, 74440), (488, 65135), (610, 52108), (854, 37220), (1220, 26054), (1708, 18610), (1861, 17080), (2135, 14888), (2440, 13027), (3416, 9305), (3722, 8540), (4270, 7444)]