856513140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{291331}}^1$

素因数の和:291357

約数の個数: 72

約数和(自身を含む): 2789795232

約数和(自身を除く): 1933282092

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, 291331, 582662, 873993, 1165324, 1456655, 1747986, 2039317, 2913310, 3495972, 4078634, 4369965, 5826620, 6117951, 8157268, 8739930, 10196585, 12235902, 14275219, 17479860, 20393170, 24471804, 28550438, 30589755, 40786340, 42825657, 57100876, 61179510, 71376095, 85651314, 122359020, 142752190, 171302628, 214128285, 285504380, 428256570, 856513140]

約数ペア:

[(1, 856513140), (2, 428256570), (3, 285504380), (4, 214128285), (5, 171302628), (6, 142752190), (7, 122359020), (10, 85651314), (12, 71376095), (14, 61179510), (15, 57100876), (20, 42825657), (21, 40786340), (28, 30589755), (30, 28550438), (35, 24471804), (42, 20393170), (49, 17479860), (60, 14275219), (70, 12235902), (84, 10196585), (98, 8739930), (105, 8157268), (140, 6117951), (147, 5826620), (196, 4369965), (210, 4078634), (245, 3495972), (294, 2913310), (420, 2039317), (490, 1747986), (588, 1456655), (735, 1165324), (980, 873993), (1470, 582662), (2940, 291331)]