20688762

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:207

約数の個数: 64

約数和(自身を含む): 46189440

約数和(自身を除く): 25500678

約数列:

[1, 2, 3, 6, 17, 34, 43, 51, 53, 86, 89, 102, 106, 129, 159, 178, 258, 267, 318, 534, 731, 901, 1462, 1513, 1802, 2193, 2279, 2703, 3026, 3827, 4386, 4539, 4558, 4717, 5406, 6837, 7654, 9078, 9434, 11481, 13674, 14151, 22962, 28302, 38743, 65059, 77486, 80189, 116229, 130118, 160378, 195177, 202831, 232458, 240567, 390354, 405662, 481134, 608493, 1216986, 3448127, 6896254, 10344381, 20688762]

約数ペア:

[(1, 20688762), (2, 10344381), (3, 6896254), (6, 3448127), (17, 1216986), (34, 608493), (43, 481134), (51, 405662), (53, 390354), (86, 240567), (89, 232458), (102, 202831), (106, 195177), (129, 160378), (159, 130118), (178, 116229), (258, 80189), (267, 77486), (318, 65059), (534, 38743), (731, 28302), (901, 22962), (1462, 14151), (1513, 13674), (1802, 11481), (2193, 9434), (2279, 9078), (2703, 7654), (3026, 6837), (3827, 5406), (4386, 4717), (4539, 4558)]