21761445

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{1399}}^1$

素因数の和:1485

約数の個数: 32

約数和(自身を含む): 37497600

約数和(自身を除く): 15736155

約数列:

[1, 3, 5, 15, 17, 51, 61, 85, 183, 255, 305, 915, 1037, 1399, 3111, 4197, 5185, 6995, 15555, 20985, 23783, 71349, 85339, 118915, 256017, 356745, 426695, 1280085, 1450763, 4352289, 7253815, 21761445]

約数ペア:

[(1, 21761445), (3, 7253815), (5, 4352289), (15, 1450763), (17, 1280085), (51, 426695), (61, 356745), (85, 256017), (183, 118915), (255, 85339), (305, 71349), (915, 23783), (1037, 20985), (1399, 15555), (3111, 6995), (4197, 5185)]