21463255

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1$

素因数の和:124

約数の個数: 48

約数和(自身を含む): 31601664

約数和(自身を除く): 10138409

約数列:

[1, 5, 11, 19, 23, 47, 55, 95, 115, 209, 235, 253, 361, 437, 517, 893, 1045, 1081, 1265, 1805, 2185, 2585, 3971, 4465, 4807, 5405, 8303, 9823, 11891, 16967, 19855, 20539, 24035, 41515, 49115, 59455, 84835, 91333, 102695, 186637, 225929, 390241, 456665, 933185, 1129645, 1951205, 4292651, 21463255]

約数ペア:

[(1, 21463255), (5, 4292651), (11, 1951205), (19, 1129645), (23, 933185), (47, 456665), (55, 390241), (95, 225929), (115, 186637), (209, 102695), (235, 91333), (253, 84835), (361, 59455), (437, 49115), (517, 41515), (893, 24035), (1045, 20539), (1081, 19855), (1265, 16967), (1805, 11891), (2185, 9823), (2585, 8303), (3971, 5405), (4465, 4807)]