21089810

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{157}}^1$

素因数の和:291

約数の個数: 64

約数和(自身を含む): 46414080

約数和(自身を除く): 25324270

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 70, 95, 101, 133, 157, 190, 202, 266, 314, 505, 665, 707, 785, 1010, 1099, 1330, 1414, 1570, 1919, 2198, 2983, 3535, 3838, 5495, 5966, 7070, 9595, 10990, 13433, 14915, 15857, 19190, 20881, 26866, 29830, 31714, 41762, 67165, 79285, 104405, 110999, 134330, 158570, 208810, 221998, 301283, 554995, 602566, 1109990, 1506415, 2108981, 3012830, 4217962, 10544905, 21089810]

約数ペア:

[(1, 21089810), (2, 10544905), (5, 4217962), (7, 3012830), (10, 2108981), (14, 1506415), (19, 1109990), (35, 602566), (38, 554995), (70, 301283), (95, 221998), (101, 208810), (133, 158570), (157, 134330), (190, 110999), (202, 104405), (266, 79285), (314, 67165), (505, 41762), (665, 31714), (707, 29830), (785, 26866), (1010, 20881), (1099, 19190), (1330, 15857), (1414, 14915), (1570, 13433), (1919, 10990), (2198, 9595), (2983, 7070), (3535, 5966), (3838, 5495)]