31477520

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{4421}}^1$

素因数の和:4523

約数の個数: 40

約数和(自身を含む): 74024280

約数和(自身を除く): 42546760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 4421, 7120, 8842, 17684, 22105, 35368, 44210, 70736, 88420, 176840, 353680, 393469, 786938, 1573876, 1967345, 3147752, 3934690, 6295504, 7869380, 15738760, 31477520]

約数ペア:

[(1, 31477520), (2, 15738760), (4, 7869380), (5, 6295504), (8, 3934690), (10, 3147752), (16, 1967345), (20, 1573876), (40, 786938), (80, 393469), (89, 353680), (178, 176840), (356, 88420), (445, 70736), (712, 44210), (890, 35368), (1424, 22105), (1780, 17684), (3560, 8842), (4421, 7120)]