20899766

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{251}}^1$

素因数の和:380

約数の個数: 32

約数和(自身を含む): 34836480

約数和(自身を除く): 13936714

約数列:

[1, 2, 17, 31, 34, 62, 79, 158, 251, 502, 527, 1054, 1343, 2449, 2686, 4267, 4898, 7781, 8534, 15562, 19829, 39658, 41633, 83266, 132277, 264554, 337093, 614699, 674186, 1229398, 10449883, 20899766]

約数ペア:

[(1, 20899766), (2, 10449883), (17, 1229398), (31, 674186), (34, 614699), (62, 337093), (79, 264554), (158, 132277), (251, 83266), (502, 41633), (527, 39658), (1054, 19829), (1343, 15562), (2449, 8534), (2686, 7781), (4267, 4898)]