399400020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{293}}^1\times {\mathrm{7573}}^1$

素因数の和:7881

約数の個数: 72

約数和(自身を含む): 1215808776

約数和(自身を除く): 816408756

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 293, 586, 879, 1172, 1465, 1758, 2637, 2930, 3516, 4395, 5274, 5860, 7573, 8790, 10548, 13185, 15146, 17580, 22719, 26370, 30292, 37865, 45438, 52740, 68157, 75730, 90876, 113595, 136314, 151460, 227190, 272628, 340785, 454380, 681570, 1363140, 2218889, 4437778, 6656667, 8875556, 11094445, 13313334, 19970001, 22188890, 26626668, 33283335, 39940002, 44377780, 66566670, 79880004, 99850005, 133133340, 199700010, 399400020]

約数ペア:

[(1, 399400020), (2, 199700010), (3, 133133340), (4, 99850005), (5, 79880004), (6, 66566670), (9, 44377780), (10, 39940002), (12, 33283335), (15, 26626668), (18, 22188890), (20, 19970001), (30, 13313334), (36, 11094445), (45, 8875556), (60, 6656667), (90, 4437778), (180, 2218889), (293, 1363140), (586, 681570), (879, 454380), (1172, 340785), (1465, 272628), (1758, 227190), (2637, 151460), (2930, 136314), (3516, 113595), (4395, 90876), (5274, 75730), (5860, 68157), (7573, 52740), (8790, 45438), (10548, 37865), (13185, 30292), (15146, 26370), (17580, 22719)]