28255240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{811}}^1$

素因数の和:902

約数の個数: 64

約数和(自身を含む): 69572160

約数和(自身を除く): 41316920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 67, 104, 130, 134, 260, 268, 335, 520, 536, 670, 811, 871, 1340, 1622, 1742, 2680, 3244, 3484, 4055, 4355, 6488, 6968, 8110, 8710, 10543, 16220, 17420, 21086, 32440, 34840, 42172, 52715, 54337, 84344, 105430, 108674, 210860, 217348, 271685, 421720, 434696, 543370, 706381, 1086740, 1412762, 2173480, 2825524, 3531905, 5651048, 7063810, 14127620, 28255240]

約数ペア:

[(1, 28255240), (2, 14127620), (4, 7063810), (5, 5651048), (8, 3531905), (10, 2825524), (13, 2173480), (20, 1412762), (26, 1086740), (40, 706381), (52, 543370), (65, 434696), (67, 421720), (104, 271685), (130, 217348), (134, 210860), (260, 108674), (268, 105430), (335, 84344), (520, 54337), (536, 52715), (670, 42172), (811, 34840), (871, 32440), (1340, 21086), (1622, 17420), (1742, 16220), (2680, 10543), (3244, 8710), (3484, 8110), (4055, 6968), (4355, 6488)]