20691220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{577}}^1$

素因数の和:760

約数の個数: 48

約数和(自身を含む): 47775168

約数和(自身を除く): 27083948

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 163, 220, 326, 577, 652, 815, 1154, 1630, 1793, 2308, 2885, 3260, 3586, 5770, 6347, 7172, 8965, 11540, 12694, 17930, 25388, 31735, 35860, 63470, 94051, 126940, 188102, 376204, 470255, 940510, 1034561, 1881020, 2069122, 4138244, 5172805, 10345610, 20691220]

約数ペア:

[(1, 20691220), (2, 10345610), (4, 5172805), (5, 4138244), (10, 2069122), (11, 1881020), (20, 1034561), (22, 940510), (44, 470255), (55, 376204), (110, 188102), (163, 126940), (220, 94051), (326, 63470), (577, 35860), (652, 31735), (815, 25388), (1154, 17930), (1630, 12694), (1793, 11540), (2308, 8965), (2885, 7172), (3260, 6347), (3586, 5770)]