18713589020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{1831}}^1\times {\mathrm{10429}}^1$

素因数の和:12283

約数の個数: 72

約数和(自身を含む): 45743977440

約数和(自身を除く): 27030388420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 1831, 3662, 7324, 9155, 10429, 12817, 18310, 20858, 25634, 36620, 41716, 51268, 52145, 64085, 73003, 89719, 104290, 128170, 146006, 179438, 208580, 256340, 292012, 358876, 365015, 448595, 511021, 730030, 897190, 1022042, 1460060, 1794380, 2044084, 2555105, 5110210, 10220420, 19095499, 38190998, 76381996, 95477495, 133668493, 190954990, 267336986, 381909980, 534673972, 668342465, 935679451, 1336684930, 1871358902, 2673369860, 3742717804, 4678397255, 9356794510, 18713589020]

約数ペア:

[(1, 18713589020), (2, 9356794510), (4, 4678397255), (5, 3742717804), (7, 2673369860), (10, 1871358902), (14, 1336684930), (20, 935679451), (28, 668342465), (35, 534673972), (49, 381909980), (70, 267336986), (98, 190954990), (140, 133668493), (196, 95477495), (245, 76381996), (490, 38190998), (980, 19095499), (1831, 10220420), (3662, 5110210), (7324, 2555105), (9155, 2044084), (10429, 1794380), (12817, 1460060), (18310, 1022042), (20858, 897190), (25634, 730030), (36620, 511021), (41716, 448595), (51268, 365015), (52145, 358876), (64085, 292012), (73003, 256340), (89719, 208580), (104290, 179438), (128170, 146006)]