18937404

素因数分解:

$2^2\times 3^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{239}}^1$

素因数の和:351

約数の個数: 72

約数和(自身を含む): 50319360

約数和(自身を除く): 31381956

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 31, 36, 62, 71, 93, 124, 142, 186, 213, 239, 279, 284, 372, 426, 478, 558, 639, 717, 852, 956, 1116, 1278, 1434, 2151, 2201, 2556, 2868, 4302, 4402, 6603, 7409, 8604, 8804, 13206, 14818, 16969, 19809, 22227, 26412, 29636, 33938, 39618, 44454, 50907, 66681, 67876, 79236, 88908, 101814, 133362, 152721, 203628, 266724, 305442, 526039, 610884, 1052078, 1578117, 2104156, 3156234, 4734351, 6312468, 9468702, 18937404]

約数ペア:

[(1, 18937404), (2, 9468702), (3, 6312468), (4, 4734351), (6, 3156234), (9, 2104156), (12, 1578117), (18, 1052078), (31, 610884), (36, 526039), (62, 305442), (71, 266724), (93, 203628), (124, 152721), (142, 133362), (186, 101814), (213, 88908), (239, 79236), (279, 67876), (284, 66681), (372, 50907), (426, 44454), (478, 39618), (558, 33938), (639, 29636), (717, 26412), (852, 22227), (956, 19809), (1116, 16969), (1278, 14818), (1434, 13206), (2151, 8804), (2201, 8604), (2556, 7409), (2868, 6603), (4302, 4402)]