19221620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{2131}}^1$

素因数の和:2192

約数の個数: 48

約数和(自身を含む): 45130176

約数和(自身を除く): 25908556

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 82, 110, 164, 205, 220, 410, 451, 820, 902, 1804, 2131, 2255, 4262, 4510, 8524, 9020, 10655, 21310, 23441, 42620, 46882, 87371, 93764, 117205, 174742, 234410, 349484, 436855, 468820, 873710, 961081, 1747420, 1922162, 3844324, 4805405, 9610810, 19221620]

約数ペア:

[(1, 19221620), (2, 9610810), (4, 4805405), (5, 3844324), (10, 1922162), (11, 1747420), (20, 961081), (22, 873710), (41, 468820), (44, 436855), (55, 349484), (82, 234410), (110, 174742), (164, 117205), (205, 93764), (220, 87371), (410, 46882), (451, 42620), (820, 23441), (902, 21310), (1804, 10655), (2131, 9020), (2255, 8524), (4262, 4510)]