18820864

素因数分解:

$2^8\times {\mathrm{37}}^1\times {\mathrm{1987}}^1$

素因数の和:2040

約数の個数: 36

約数和(自身を含む): 38602984

約数和(自身を除く): 19782120

約数列:

[1, 2, 4, 8, 16, 32, 37, 64, 74, 128, 148, 256, 296, 592, 1184, 1987, 2368, 3974, 4736, 7948, 9472, 15896, 31792, 63584, 73519, 127168, 147038, 254336, 294076, 508672, 588152, 1176304, 2352608, 4705216, 9410432, 18820864]

約数ペア:

[(1, 18820864), (2, 9410432), (4, 4705216), (8, 2352608), (16, 1176304), (32, 588152), (37, 508672), (64, 294076), (74, 254336), (128, 147038), (148, 127168), (256, 73519), (296, 63584), (592, 31792), (1184, 15896), (1987, 9472), (2368, 7948), (3974, 4736)]