21526875

素因数分解:

$3^2\times 5^4\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:158

約数の個数: 60

約数和(自身を含む): 40205880

約数和(自身を除く): 18679005

約数列:

[1, 3, 5, 9, 15, 25, 43, 45, 75, 89, 125, 129, 215, 225, 267, 375, 387, 445, 625, 645, 801, 1075, 1125, 1335, 1875, 1935, 2225, 3225, 3827, 4005, 5375, 5625, 6675, 9675, 11125, 11481, 16125, 19135, 20025, 26875, 33375, 34443, 48375, 55625, 57405, 80625, 95675, 100125, 166875, 172215, 241875, 287025, 478375, 500625, 861075, 1435125, 2391875, 4305375, 7175625, 21526875]

約数ペア:

[(1, 21526875), (3, 7175625), (5, 4305375), (9, 2391875), (15, 1435125), (25, 861075), (43, 500625), (45, 478375), (75, 287025), (89, 241875), (125, 172215), (129, 166875), (215, 100125), (225, 95675), (267, 80625), (375, 57405), (387, 55625), (445, 48375), (625, 34443), (645, 33375), (801, 26875), (1075, 20025), (1125, 19135), (1335, 16125), (1875, 11481), (1935, 11125), (2225, 9675), (3225, 6675), (3827, 5625), (4005, 5375)]