18540756

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{229}}^1$

素因数の和:425

約数の個数: 72

約数和(自身を含む): 50985480

約数和(自身を除く): 32444724

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 173, 229, 234, 346, 458, 468, 519, 687, 692, 916, 1038, 1374, 1557, 2061, 2076, 2249, 2748, 2977, 3114, 4122, 4498, 5954, 6228, 6747, 8244, 8931, 8996, 11908, 13494, 17862, 20241, 26793, 26988, 35724, 39617, 40482, 53586, 79234, 80964, 107172, 118851, 158468, 237702, 356553, 475404, 515021, 713106, 1030042, 1426212, 1545063, 2060084, 3090126, 4635189, 6180252, 9270378, 18540756]

約数ペア:

[(1, 18540756), (2, 9270378), (3, 6180252), (4, 4635189), (6, 3090126), (9, 2060084), (12, 1545063), (13, 1426212), (18, 1030042), (26, 713106), (36, 515021), (39, 475404), (52, 356553), (78, 237702), (117, 158468), (156, 118851), (173, 107172), (229, 80964), (234, 79234), (346, 53586), (458, 40482), (468, 39617), (519, 35724), (687, 26988), (692, 26793), (916, 20241), (1038, 17862), (1374, 13494), (1557, 11908), (2061, 8996), (2076, 8931), (2249, 8244), (2748, 6747), (2977, 6228), (3114, 5954), (4122, 4498)]