21228180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{113}}^1$

素因数の和:257

約数の個数: 96

約数和(自身を含む): 62512128

約数和(自身を除く): 41283948

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 60, 62, 93, 101, 113, 124, 155, 186, 202, 226, 303, 310, 339, 372, 404, 452, 465, 505, 565, 606, 620, 678, 930, 1010, 1130, 1212, 1356, 1515, 1695, 1860, 2020, 2260, 3030, 3131, 3390, 3503, 6060, 6262, 6780, 7006, 9393, 10509, 11413, 12524, 14012, 15655, 17515, 18786, 21018, 22826, 31310, 34239, 35030, 37572, 42036, 45652, 46965, 52545, 57065, 62620, 68478, 70060, 93930, 105090, 114130, 136956, 171195, 187860, 210180, 228260, 342390, 353803, 684780, 707606, 1061409, 1415212, 1769015, 2122818, 3538030, 4245636, 5307045, 7076060, 10614090, 21228180]

約数ペア:

[(1, 21228180), (2, 10614090), (3, 7076060), (4, 5307045), (5, 4245636), (6, 3538030), (10, 2122818), (12, 1769015), (15, 1415212), (20, 1061409), (30, 707606), (31, 684780), (60, 353803), (62, 342390), (93, 228260), (101, 210180), (113, 187860), (124, 171195), (155, 136956), (186, 114130), (202, 105090), (226, 93930), (303, 70060), (310, 68478), (339, 62620), (372, 57065), (404, 52545), (452, 46965), (465, 45652), (505, 42036), (565, 37572), (606, 35030), (620, 34239), (678, 31310), (930, 22826), (1010, 21018), (1130, 18786), (1212, 17515), (1356, 15655), (1515, 14012), (1695, 12524), (1860, 11413), (2020, 10509), (2260, 9393), (3030, 7006), (3131, 6780), (3390, 6262), (3503, 6060)]