257023100

素因数分解:

$2^2\times 5^2\times {\mathrm{89}}^1\times {\mathrm{28879}}^1$

素因数の和:28982

約数の個数: 36

約数和(自身を含む): 564026400

約数和(自身を除く): 307003300

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 89, 100, 178, 356, 445, 890, 1780, 2225, 4450, 8900, 28879, 57758, 115516, 144395, 288790, 577580, 721975, 1443950, 2570231, 2887900, 5140462, 10280924, 12851155, 25702310, 51404620, 64255775, 128511550, 257023100]

約数ペア:

[(1, 257023100), (2, 128511550), (4, 64255775), (5, 51404620), (10, 25702310), (20, 12851155), (25, 10280924), (50, 5140462), (89, 2887900), (100, 2570231), (178, 1443950), (356, 721975), (445, 577580), (890, 288790), (1780, 144395), (2225, 115516), (4450, 57758), (8900, 28879)]