21066990

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2333}}^1$

素因数の和:2393

約数の個数: 64

約数和(自身を含む): 59152896

約数和(自身を除く): 38085906

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 43, 70, 86, 105, 129, 210, 215, 258, 301, 430, 602, 645, 903, 1290, 1505, 1806, 2333, 3010, 4515, 4666, 6999, 9030, 11665, 13998, 16331, 23330, 32662, 34995, 48993, 69990, 81655, 97986, 100319, 163310, 200638, 244965, 300957, 489930, 501595, 601914, 702233, 1003190, 1404466, 1504785, 2106699, 3009570, 3511165, 4213398, 7022330, 10533495, 21066990]

約数ペア:

[(1, 21066990), (2, 10533495), (3, 7022330), (5, 4213398), (6, 3511165), (7, 3009570), (10, 2106699), (14, 1504785), (15, 1404466), (21, 1003190), (30, 702233), (35, 601914), (42, 501595), (43, 489930), (70, 300957), (86, 244965), (105, 200638), (129, 163310), (210, 100319), (215, 97986), (258, 81655), (301, 69990), (430, 48993), (602, 34995), (645, 32662), (903, 23330), (1290, 16331), (1505, 13998), (1806, 11665), (2333, 9030), (3010, 6999), (4515, 4666)]