21568990

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{1861}}^1$

素因数の和:1948

約数の個数: 32

約数和(自身を含む): 41559840

約数和(自身を除く): 19990850

約数列:

[1, 2, 5, 10, 19, 38, 61, 95, 122, 190, 305, 610, 1159, 1861, 2318, 3722, 5795, 9305, 11590, 18610, 35359, 70718, 113521, 176795, 227042, 353590, 567605, 1135210, 2156899, 4313798, 10784495, 21568990]

約数ペア:

[(1, 21568990), (2, 10784495), (5, 4313798), (10, 2156899), (19, 1135210), (38, 567605), (61, 353590), (95, 227042), (122, 176795), (190, 113521), (305, 70718), (610, 35359), (1159, 18610), (1861, 11590), (2318, 9305), (3722, 5795)]