20966768

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{619}}^1$

素因数の和:729

約数の個数: 40

約数和(自身を含む): 42668400

約数和(自身を除く): 21701632

約数列:

[1, 2, 4, 8, 16, 29, 58, 73, 116, 146, 232, 292, 464, 584, 619, 1168, 1238, 2117, 2476, 4234, 4952, 8468, 9904, 16936, 17951, 33872, 35902, 45187, 71804, 90374, 143608, 180748, 287216, 361496, 722992, 1310423, 2620846, 5241692, 10483384, 20966768]

約数ペア:

[(1, 20966768), (2, 10483384), (4, 5241692), (8, 2620846), (16, 1310423), (29, 722992), (58, 361496), (73, 287216), (116, 180748), (146, 143608), (232, 90374), (292, 71804), (464, 45187), (584, 35902), (619, 33872), (1168, 17951), (1238, 16936), (2117, 9904), (2476, 8468), (4234, 4952)]