20977300

素因数分解:

$2^2\times 5^2\times {\mathrm{89}}^1\times {\mathrm{2357}}^1$

素因数の和:2460

約数の個数: 36

約数和(自身を含む): 46051740

約数和(自身を除く): 25074440

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 89, 100, 178, 356, 445, 890, 1780, 2225, 2357, 4450, 4714, 8900, 9428, 11785, 23570, 47140, 58925, 117850, 209773, 235700, 419546, 839092, 1048865, 2097730, 4195460, 5244325, 10488650, 20977300]

約数ペア:

[(1, 20977300), (2, 10488650), (4, 5244325), (5, 4195460), (10, 2097730), (20, 1048865), (25, 839092), (50, 419546), (89, 235700), (100, 209773), (178, 117850), (356, 58925), (445, 47140), (890, 23570), (1780, 11785), (2225, 9428), (2357, 8900), (4450, 4714)]