21620764

素因数分解:

$2^2\times {\mathrm{11}}^3\times {\mathrm{31}}^1\times {\mathrm{131}}^1$

素因数の和:199

約数の個数: 48

約数和(自身を含む): 43287552

約数和(自身を除く): 21666788

約数列:

[1, 2, 4, 11, 22, 31, 44, 62, 121, 124, 131, 242, 262, 341, 484, 524, 682, 1331, 1364, 1441, 2662, 2882, 3751, 4061, 5324, 5764, 7502, 8122, 15004, 15851, 16244, 31702, 41261, 44671, 63404, 82522, 89342, 165044, 174361, 178684, 348722, 491381, 697444, 982762, 1965524, 5405191, 10810382, 21620764]

約数ペア:

[(1, 21620764), (2, 10810382), (4, 5405191), (11, 1965524), (22, 982762), (31, 697444), (44, 491381), (62, 348722), (121, 178684), (124, 174361), (131, 165044), (242, 89342), (262, 82522), (341, 63404), (484, 44671), (524, 41261), (682, 31702), (1331, 16244), (1364, 15851), (1441, 15004), (2662, 8122), (2882, 7502), (3751, 5764), (4061, 5324)]