21871432

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{127}}^1$

素因数の和:266

約数の個数: 64

約数和(自身を含む): 47923200

約数和(自身を除く): 26051768

約数列:

[1, 2, 4, 8, 11, 19, 22, 38, 44, 76, 88, 103, 127, 152, 206, 209, 254, 412, 418, 508, 824, 836, 1016, 1133, 1397, 1672, 1957, 2266, 2413, 2794, 3914, 4532, 4826, 5588, 7828, 9064, 9652, 11176, 13081, 15656, 19304, 21527, 26162, 26543, 43054, 52324, 53086, 86108, 104648, 106172, 143891, 172216, 212344, 248539, 287782, 497078, 575564, 994156, 1151128, 1988312, 2733929, 5467858, 10935716, 21871432]

約数ペア:

[(1, 21871432), (2, 10935716), (4, 5467858), (8, 2733929), (11, 1988312), (19, 1151128), (22, 994156), (38, 575564), (44, 497078), (76, 287782), (88, 248539), (103, 212344), (127, 172216), (152, 143891), (206, 106172), (209, 104648), (254, 86108), (412, 53086), (418, 52324), (508, 43054), (824, 26543), (836, 26162), (1016, 21527), (1133, 19304), (1397, 15656), (1672, 13081), (1957, 11176), (2266, 9652), (2413, 9064), (2794, 7828), (3914, 5588), (4532, 4826)]