20977218

素因数分解:

$2^1\times 3^5\times {\mathrm{17}}^1\times {\mathrm{2539}}^1$

素因数の和:2573

約数の個数: 48

約数和(自身を含む): 49926240

約数和(自身を除く): 28949022

約数列:

[1, 2, 3, 6, 9, 17, 18, 27, 34, 51, 54, 81, 102, 153, 162, 243, 306, 459, 486, 918, 1377, 2539, 2754, 4131, 5078, 7617, 8262, 15234, 22851, 43163, 45702, 68553, 86326, 129489, 137106, 205659, 258978, 388467, 411318, 616977, 776934, 1165401, 1233954, 2330802, 3496203, 6992406, 10488609, 20977218]

約数ペア:

[(1, 20977218), (2, 10488609), (3, 6992406), (6, 3496203), (9, 2330802), (17, 1233954), (18, 1165401), (27, 776934), (34, 616977), (51, 411318), (54, 388467), (81, 258978), (102, 205659), (153, 137106), (162, 129489), (243, 86326), (306, 68553), (459, 45702), (486, 43163), (918, 22851), (1377, 15234), (2539, 8262), (2754, 7617), (4131, 5078)]