21855930

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{331}}^1$

素因数の和:443

約数の個数: 64

約数和(自身を含む): 55074816

約数和(自身を除く): 33218886

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 31, 62, 71, 93, 142, 155, 186, 213, 310, 331, 355, 426, 465, 662, 710, 930, 993, 1065, 1655, 1986, 2130, 2201, 3310, 4402, 4965, 6603, 9930, 10261, 11005, 13206, 20522, 22010, 23501, 30783, 33015, 47002, 51305, 61566, 66030, 70503, 102610, 117505, 141006, 153915, 235010, 307830, 352515, 705030, 728531, 1457062, 2185593, 3642655, 4371186, 7285310, 10927965, 21855930]

約数ペア:

[(1, 21855930), (2, 10927965), (3, 7285310), (5, 4371186), (6, 3642655), (10, 2185593), (15, 1457062), (30, 728531), (31, 705030), (62, 352515), (71, 307830), (93, 235010), (142, 153915), (155, 141006), (186, 117505), (213, 102610), (310, 70503), (331, 66030), (355, 61566), (426, 51305), (465, 47002), (662, 33015), (710, 30783), (930, 23501), (993, 22010), (1065, 20522), (1655, 13206), (1986, 11005), (2130, 10261), (2201, 9930), (3310, 6603), (4402, 4965)]