20395778

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{41}}^1\times {\mathrm{53}}^1$

素因数の和:147

約数の個数: 48

約数和(自身を含む): 36292536

約数和(自身を除く): 15896758

約数列:

[1, 2, 13, 19, 26, 38, 41, 53, 82, 106, 247, 361, 494, 533, 689, 722, 779, 1007, 1066, 1378, 1558, 2014, 2173, 4346, 4693, 9386, 10127, 13091, 14801, 19133, 20254, 26182, 28249, 29602, 38266, 41287, 56498, 82574, 192413, 248729, 384826, 497458, 536731, 784453, 1073462, 1568906, 10197889, 20395778]

約数ペア:

[(1, 20395778), (2, 10197889), (13, 1568906), (19, 1073462), (26, 784453), (38, 536731), (41, 497458), (53, 384826), (82, 248729), (106, 192413), (247, 82574), (361, 56498), (494, 41287), (533, 38266), (689, 29602), (722, 28249), (779, 26182), (1007, 20254), (1066, 19133), (1378, 14801), (1558, 13091), (2014, 10127), (2173, 9386), (4346, 4693)]