1561780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{229}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 3709440

約数和(自身を除く): 2147660

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 124, 155, 220, 229, 310, 341, 458, 620, 682, 916, 1145, 1364, 1705, 2290, 2519, 3410, 4580, 5038, 6820, 7099, 10076, 12595, 14198, 25190, 28396, 35495, 50380, 70990, 78089, 141980, 156178, 312356, 390445, 780890, 1561780]

約数ペア:

[(1, 1561780), (2, 780890), (4, 390445), (5, 312356), (10, 156178), (11, 141980), (20, 78089), (22, 70990), (31, 50380), (44, 35495), (55, 28396), (62, 25190), (110, 14198), (124, 12595), (155, 10076), (220, 7099), (229, 6820), (310, 5038), (341, 4580), (458, 3410), (620, 2519), (682, 2290), (916, 1705), (1145, 1364)]