20388654

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{89}}^2$

素因数の和:210

約数の個数: 72

約数和(自身を含む): 52488072

約数和(自身を除く): 32099418

約数列:

[1, 2, 3, 6, 9, 11, 13, 18, 22, 26, 33, 39, 66, 78, 89, 99, 117, 143, 178, 198, 234, 267, 286, 429, 534, 801, 858, 979, 1157, 1287, 1602, 1958, 2314, 2574, 2937, 3471, 5874, 6942, 7921, 8811, 10413, 12727, 15842, 17622, 20826, 23763, 25454, 38181, 47526, 71289, 76362, 87131, 102973, 114543, 142578, 174262, 205946, 229086, 261393, 308919, 522786, 617838, 784179, 926757, 1132703, 1568358, 1853514, 2265406, 3398109, 6796218, 10194327, 20388654]

約数ペア:

[(1, 20388654), (2, 10194327), (3, 6796218), (6, 3398109), (9, 2265406), (11, 1853514), (13, 1568358), (18, 1132703), (22, 926757), (26, 784179), (33, 617838), (39, 522786), (66, 308919), (78, 261393), (89, 229086), (99, 205946), (117, 174262), (143, 142578), (178, 114543), (198, 102973), (234, 87131), (267, 76362), (286, 71289), (429, 47526), (534, 38181), (801, 25454), (858, 23763), (979, 20826), (1157, 17622), (1287, 15842), (1602, 12727), (1958, 10413), (2314, 8811), (2574, 7921), (2937, 6942), (3471, 5874)]