20897008

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{3209}}^1$

素因数の和:3265

約数の個数: 40

約数和(自身を含む): 45376560

約数和(自身を除く): 24479552

約数列:

[1, 2, 4, 8, 11, 16, 22, 37, 44, 74, 88, 148, 176, 296, 407, 592, 814, 1628, 3209, 3256, 6418, 6512, 12836, 25672, 35299, 51344, 70598, 118733, 141196, 237466, 282392, 474932, 564784, 949864, 1306063, 1899728, 2612126, 5224252, 10448504, 20897008]

約数ペア:

[(1, 20897008), (2, 10448504), (4, 5224252), (8, 2612126), (11, 1899728), (16, 1306063), (22, 949864), (37, 564784), (44, 474932), (74, 282392), (88, 237466), (148, 141196), (176, 118733), (296, 70598), (407, 51344), (592, 35299), (814, 25672), (1628, 12836), (3209, 6512), (3256, 6418)]