31135760

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{4373}}^1$

素因数の和:4475

約数の個数: 40

約数和(自身を含む): 73220760

約数和(自身を除く): 42085000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 4373, 7120, 8746, 17492, 21865, 34984, 43730, 69968, 87460, 174920, 349840, 389197, 778394, 1556788, 1945985, 3113576, 3891970, 6227152, 7783940, 15567880, 31135760]

約数ペア:

[(1, 31135760), (2, 15567880), (4, 7783940), (5, 6227152), (8, 3891970), (10, 3113576), (16, 1945985), (20, 1556788), (40, 778394), (80, 389197), (89, 349840), (178, 174920), (356, 87460), (445, 69968), (712, 43730), (890, 34984), (1424, 21865), (1780, 17492), (3560, 8746), (4373, 7120)]