21975520

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{2803}}^1$

素因数の和:2832

約数の個数: 72

約数和(自身を含む): 60414984

約数和(自身を除く): 38439464

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 2803, 3920, 5606, 7840, 11212, 14015, 19621, 22424, 28030, 39242, 44848, 56060, 78484, 89696, 98105, 112120, 137347, 156968, 196210, 224240, 274694, 313936, 392420, 448480, 549388, 627872, 686735, 784840, 1098776, 1373470, 1569680, 2197552, 2746940, 3139360, 4395104, 5493880, 10987760, 21975520]

約数ペア:

[(1, 21975520), (2, 10987760), (4, 5493880), (5, 4395104), (7, 3139360), (8, 2746940), (10, 2197552), (14, 1569680), (16, 1373470), (20, 1098776), (28, 784840), (32, 686735), (35, 627872), (40, 549388), (49, 448480), (56, 392420), (70, 313936), (80, 274694), (98, 224240), (112, 196210), (140, 156968), (160, 137347), (196, 112120), (224, 98105), (245, 89696), (280, 78484), (392, 56060), (490, 44848), (560, 39242), (784, 28030), (980, 22424), (1120, 19621), (1568, 14015), (1960, 11212), (2803, 7840), (3920, 5606)]