209671980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{71317}}^1$

素因数の和:71343

約数の個数: 72

約数和(自身を含む): 682941168

約数和(自身を除く): 473269188

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 71317, 142634, 213951, 285268, 356585, 427902, 499219, 713170, 855804, 998438, 1069755, 1426340, 1497657, 1996876, 2139510, 2496095, 2995314, 3494533, 4279020, 4992190, 5990628, 6989066, 7488285, 9984380, 10483599, 13978132, 14976570, 17472665, 20967198, 29953140, 34945330, 41934396, 52417995, 69890660, 104835990, 209671980]

約数ペア:

[(1, 209671980), (2, 104835990), (3, 69890660), (4, 52417995), (5, 41934396), (6, 34945330), (7, 29953140), (10, 20967198), (12, 17472665), (14, 14976570), (15, 13978132), (20, 10483599), (21, 9984380), (28, 7488285), (30, 6989066), (35, 5990628), (42, 4992190), (49, 4279020), (60, 3494533), (70, 2995314), (84, 2496095), (98, 2139510), (105, 1996876), (140, 1497657), (147, 1426340), (196, 1069755), (210, 998438), (245, 855804), (294, 713170), (420, 499219), (490, 427902), (588, 356585), (735, 285268), (980, 213951), (1470, 142634), (2940, 71317)]