186781820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{419}}^1\times {\mathrm{719}}^1$

素因数の和:1178

約数の個数: 48

約数和(自身を含む): 406425600

約数和(自身を除く): 219643780

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 419, 620, 719, 838, 1438, 1676, 2095, 2876, 3595, 4190, 7190, 8380, 12989, 14380, 22289, 25978, 44578, 51956, 64945, 89156, 111445, 129890, 222890, 259780, 301261, 445780, 602522, 1205044, 1506305, 3012610, 6025220, 9339091, 18678182, 37356364, 46695455, 93390910, 186781820]

約数ペア:

[(1, 186781820), (2, 93390910), (4, 46695455), (5, 37356364), (10, 18678182), (20, 9339091), (31, 6025220), (62, 3012610), (124, 1506305), (155, 1205044), (310, 602522), (419, 445780), (620, 301261), (719, 259780), (838, 222890), (1438, 129890), (1676, 111445), (2095, 89156), (2876, 64945), (3595, 51956), (4190, 44578), (7190, 25978), (8380, 22289), (12989, 14380)]