31656780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{443}}^1$

素因数の和:855

約数の個数: 72

約数和(自身を含む): 96484752

約数和(自身を除く): 64827972

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 397, 443, 794, 886, 1191, 1329, 1588, 1772, 1985, 2215, 2382, 2658, 3573, 3970, 3987, 4430, 4764, 5316, 5955, 6645, 7146, 7940, 7974, 8860, 11910, 13290, 14292, 15948, 17865, 19935, 23820, 26580, 35730, 39870, 71460, 79740, 175871, 351742, 527613, 703484, 879355, 1055226, 1582839, 1758710, 2110452, 2638065, 3165678, 3517420, 5276130, 6331356, 7914195, 10552260, 15828390, 31656780]

約数ペア:

[(1, 31656780), (2, 15828390), (3, 10552260), (4, 7914195), (5, 6331356), (6, 5276130), (9, 3517420), (10, 3165678), (12, 2638065), (15, 2110452), (18, 1758710), (20, 1582839), (30, 1055226), (36, 879355), (45, 703484), (60, 527613), (90, 351742), (180, 175871), (397, 79740), (443, 71460), (794, 39870), (886, 35730), (1191, 26580), (1329, 23820), (1588, 19935), (1772, 17865), (1985, 15948), (2215, 14292), (2382, 13290), (2658, 11910), (3573, 8860), (3970, 7974), (3987, 7940), (4430, 7146), (4764, 6645), (5316, 5955)]