21379360

素因数分解:

$2^5\times 5^1\times {\mathrm{47}}^1\times {\mathrm{2843}}^1$

素因数の和:2905

約数の個数: 48

約数和(自身を含む): 51601536

約数和(自身を除く): 30222176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 80, 94, 160, 188, 235, 376, 470, 752, 940, 1504, 1880, 2843, 3760, 5686, 7520, 11372, 14215, 22744, 28430, 45488, 56860, 90976, 113720, 133621, 227440, 267242, 454880, 534484, 668105, 1068968, 1336210, 2137936, 2672420, 4275872, 5344840, 10689680, 21379360]

約数ペア:

[(1, 21379360), (2, 10689680), (4, 5344840), (5, 4275872), (8, 2672420), (10, 2137936), (16, 1336210), (20, 1068968), (32, 668105), (40, 534484), (47, 454880), (80, 267242), (94, 227440), (160, 133621), (188, 113720), (235, 90976), (376, 56860), (470, 45488), (752, 28430), (940, 22744), (1504, 14215), (1880, 11372), (2843, 7520), (3760, 5686)]