138526640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{247369}}^1$

素因数の和:247389

約数の個数: 40

約数和(自身を含む): 368086560

約数和(自身を除く): 229559920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 247369, 494738, 989476, 1236845, 1731583, 1978952, 2473690, 3463166, 3957904, 4947380, 6926332, 8657915, 9894760, 13852664, 17315830, 19789520, 27705328, 34631660, 69263320, 138526640]

約数ペア:

[(1, 138526640), (2, 69263320), (4, 34631660), (5, 27705328), (7, 19789520), (8, 17315830), (10, 13852664), (14, 9894760), (16, 8657915), (20, 6926332), (28, 4947380), (35, 3957904), (40, 3463166), (56, 2473690), (70, 1978952), (80, 1731583), (112, 1236845), (140, 989476), (280, 494738), (560, 247369)]