31125080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1249}}^1$

素因数の和:1356

約数の個数: 64

約数和(自身を含む): 81000000

約数和(自身を除く): 49874920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 89, 140, 178, 280, 356, 445, 623, 712, 890, 1246, 1249, 1780, 2492, 2498, 3115, 3560, 4984, 4996, 6230, 6245, 8743, 9992, 12460, 12490, 17486, 24920, 24980, 34972, 43715, 49960, 69944, 87430, 111161, 174860, 222322, 349720, 444644, 555805, 778127, 889288, 1111610, 1556254, 2223220, 3112508, 3890635, 4446440, 6225016, 7781270, 15562540, 31125080]

約数ペア:

[(1, 31125080), (2, 15562540), (4, 7781270), (5, 6225016), (7, 4446440), (8, 3890635), (10, 3112508), (14, 2223220), (20, 1556254), (28, 1111610), (35, 889288), (40, 778127), (56, 555805), (70, 444644), (89, 349720), (140, 222322), (178, 174860), (280, 111161), (356, 87430), (445, 69944), (623, 49960), (712, 43715), (890, 34972), (1246, 24980), (1249, 24920), (1780, 17486), (2492, 12490), (2498, 12460), (3115, 9992), (3560, 8743), (4984, 6245), (4996, 6230)]