20418255

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{167}}^1$

素因数の和:221

約数の個数: 96

約数和(自身を含む): 44029440

約数和(自身を除く): 23611185

約数列:

[1, 3, 5, 9, 11, 13, 15, 19, 33, 39, 45, 55, 57, 65, 95, 99, 117, 143, 165, 167, 171, 195, 209, 247, 285, 429, 495, 501, 585, 627, 715, 741, 835, 855, 1045, 1235, 1287, 1503, 1837, 1881, 2145, 2171, 2223, 2505, 2717, 3135, 3173, 3705, 5511, 6435, 6513, 7515, 8151, 9185, 9405, 9519, 10855, 11115, 13585, 15865, 16533, 19539, 23881, 24453, 27555, 28557, 32565, 34903, 40755, 41249, 47595, 71643, 82665, 97695, 104709, 119405, 122265, 123747, 142785, 174515, 206245, 214929, 314127, 358215, 371241, 453739, 523545, 618735, 1074645, 1361217, 1570635, 1856205, 2268695, 4083651, 6806085, 20418255]

約数ペア:

[(1, 20418255), (3, 6806085), (5, 4083651), (9, 2268695), (11, 1856205), (13, 1570635), (15, 1361217), (19, 1074645), (33, 618735), (39, 523545), (45, 453739), (55, 371241), (57, 358215), (65, 314127), (95, 214929), (99, 206245), (117, 174515), (143, 142785), (165, 123747), (167, 122265), (171, 119405), (195, 104709), (209, 97695), (247, 82665), (285, 71643), (429, 47595), (495, 41249), (501, 40755), (585, 34903), (627, 32565), (715, 28557), (741, 27555), (835, 24453), (855, 23881), (1045, 19539), (1235, 16533), (1287, 15865), (1503, 13585), (1837, 11115), (1881, 10855), (2145, 9519), (2171, 9405), (2223, 9185), (2505, 8151), (2717, 7515), (3135, 6513), (3173, 6435), (3705, 5511)]