20872116

素因数分解:

$2^2\times 3^2\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{179}}^1$

素因数の和:309

約数の個数: 72

約数和(自身を含む): 55036800

約数和(自身を除く): 34164684

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 41, 79, 82, 123, 158, 164, 179, 237, 246, 316, 358, 369, 474, 492, 537, 711, 716, 738, 948, 1074, 1422, 1476, 1611, 2148, 2844, 3222, 3239, 6444, 6478, 7339, 9717, 12956, 14141, 14678, 19434, 22017, 28282, 29151, 29356, 38868, 42423, 44034, 56564, 58302, 66051, 84846, 88068, 116604, 127269, 132102, 169692, 254538, 264204, 509076, 579781, 1159562, 1739343, 2319124, 3478686, 5218029, 6957372, 10436058, 20872116]

約数ペア:

[(1, 20872116), (2, 10436058), (3, 6957372), (4, 5218029), (6, 3478686), (9, 2319124), (12, 1739343), (18, 1159562), (36, 579781), (41, 509076), (79, 264204), (82, 254538), (123, 169692), (158, 132102), (164, 127269), (179, 116604), (237, 88068), (246, 84846), (316, 66051), (358, 58302), (369, 56564), (474, 44034), (492, 42423), (537, 38868), (711, 29356), (716, 29151), (738, 28282), (948, 22017), (1074, 19434), (1422, 14678), (1476, 14141), (1611, 12956), (2148, 9717), (2844, 7339), (3222, 6478), (3239, 6444)]