6521780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:264

約数の個数: 48

約数和(自身を含む): 14439936

約数和(自身を除く): 7918156

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 67, 124, 134, 155, 157, 268, 310, 314, 335, 620, 628, 670, 785, 1340, 1570, 2077, 3140, 4154, 4867, 8308, 9734, 10385, 10519, 19468, 20770, 21038, 24335, 41540, 42076, 48670, 52595, 97340, 105190, 210380, 326089, 652178, 1304356, 1630445, 3260890, 6521780]

約数ペア:

[(1, 6521780), (2, 3260890), (4, 1630445), (5, 1304356), (10, 652178), (20, 326089), (31, 210380), (62, 105190), (67, 97340), (124, 52595), (134, 48670), (155, 42076), (157, 41540), (268, 24335), (310, 21038), (314, 20770), (335, 19468), (620, 10519), (628, 10385), (670, 9734), (785, 8308), (1340, 4867), (1570, 4154), (2077, 3140)]