20672504

素因数分解:

$2^3\times {\mathrm{109}}^1\times {\mathrm{151}}^1\times {\mathrm{157}}^1$

素因数の和:423

約数の個数: 32

約数和(自身を含む): 39626400

約数和(自身を除く): 18953896

約数列:

[1, 2, 4, 8, 109, 151, 157, 218, 302, 314, 436, 604, 628, 872, 1208, 1256, 16459, 17113, 23707, 32918, 34226, 47414, 65836, 68452, 94828, 131672, 136904, 189656, 2584063, 5168126, 10336252, 20672504]

約数ペア:

[(1, 20672504), (2, 10336252), (4, 5168126), (8, 2584063), (109, 189656), (151, 136904), (157, 131672), (218, 94828), (302, 68452), (314, 65836), (436, 47414), (604, 34226), (628, 32918), (872, 23707), (1208, 17113), (1256, 16459)]