21820900

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{7039}}^1$

素因数の和:7084

約数の個数: 36

約数和(自身を含む): 48885760

約数和(自身を除く): 27064860

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 155, 310, 620, 775, 1550, 3100, 7039, 14078, 28156, 35195, 70390, 140780, 175975, 218209, 351950, 436418, 703900, 872836, 1091045, 2182090, 4364180, 5455225, 10910450, 21820900]

約数ペア:

[(1, 21820900), (2, 10910450), (4, 5455225), (5, 4364180), (10, 2182090), (20, 1091045), (25, 872836), (31, 703900), (50, 436418), (62, 351950), (100, 218209), (124, 175975), (155, 140780), (310, 70390), (620, 35195), (775, 28156), (1550, 14078), (3100, 7039)]