20966792

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{337}}^1$

素因数の和:462

約数の個数: 64

約数和(自身を含む): 49645440

約数和(自身を除く): 28678648

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 101, 154, 202, 308, 337, 404, 616, 674, 707, 808, 1111, 1348, 1414, 2222, 2359, 2696, 2828, 3707, 4444, 4718, 5656, 7414, 7777, 8888, 9436, 14828, 15554, 18872, 25949, 29656, 31108, 34037, 51898, 62216, 68074, 103796, 136148, 207592, 238259, 272296, 374407, 476518, 748814, 953036, 1497628, 1906072, 2620849, 2995256, 5241698, 10483396, 20966792]

約数ペア:

[(1, 20966792), (2, 10483396), (4, 5241698), (7, 2995256), (8, 2620849), (11, 1906072), (14, 1497628), (22, 953036), (28, 748814), (44, 476518), (56, 374407), (77, 272296), (88, 238259), (101, 207592), (154, 136148), (202, 103796), (308, 68074), (337, 62216), (404, 51898), (616, 34037), (674, 31108), (707, 29656), (808, 25949), (1111, 18872), (1348, 15554), (1414, 14828), (2222, 9436), (2359, 8888), (2696, 7777), (2828, 7414), (3707, 5656), (4444, 4718)]