21343900

素因数分解:

$2^2\times 5^2\times {\mathrm{61}}^1\times {\mathrm{3499}}^1$

素因数の和:3574

約数の個数: 36

約数和(自身を含む): 47089000

約数和(自身を除く): 25745100

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 61, 100, 122, 244, 305, 610, 1220, 1525, 3050, 3499, 6100, 6998, 13996, 17495, 34990, 69980, 87475, 174950, 213439, 349900, 426878, 853756, 1067195, 2134390, 4268780, 5335975, 10671950, 21343900]

約数ペア:

[(1, 21343900), (2, 10671950), (4, 5335975), (5, 4268780), (10, 2134390), (20, 1067195), (25, 853756), (50, 426878), (61, 349900), (100, 213439), (122, 174950), (244, 87475), (305, 69980), (610, 34990), (1220, 17495), (1525, 13996), (3050, 6998), (3499, 6100)]