28307500

素因数分解:

$2^2\times 5^4\times {\mathrm{13}}^2\times {\mathrm{67}}^1$

素因数の和:117

約数の個数: 90

約数和(自身を含む): 68031348

約数和(自身を除く): 39723848

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 67, 100, 125, 130, 134, 169, 250, 260, 268, 325, 335, 338, 500, 625, 650, 670, 676, 845, 871, 1250, 1300, 1340, 1625, 1675, 1690, 1742, 2500, 3250, 3350, 3380, 3484, 4225, 4355, 6500, 6700, 8125, 8375, 8450, 8710, 11323, 16250, 16750, 16900, 17420, 21125, 21775, 22646, 32500, 33500, 41875, 42250, 43550, 45292, 56615, 83750, 84500, 87100, 105625, 108875, 113230, 167500, 211250, 217750, 226460, 283075, 422500, 435500, 544375, 566150, 1088750, 1132300, 1415375, 2177500, 2830750, 5661500, 7076875, 14153750, 28307500]

約数ペア:

[(1, 28307500), (2, 14153750), (4, 7076875), (5, 5661500), (10, 2830750), (13, 2177500), (20, 1415375), (25, 1132300), (26, 1088750), (50, 566150), (52, 544375), (65, 435500), (67, 422500), (100, 283075), (125, 226460), (130, 217750), (134, 211250), (169, 167500), (250, 113230), (260, 108875), (268, 105625), (325, 87100), (335, 84500), (338, 83750), (500, 56615), (625, 45292), (650, 43550), (670, 42250), (676, 41875), (845, 33500), (871, 32500), (1250, 22646), (1300, 21775), (1340, 21125), (1625, 17420), (1675, 16900), (1690, 16750), (1742, 16250), (2500, 11323), (3250, 8710), (3350, 8450), (3380, 8375), (3484, 8125), (4225, 6700), (4355, 6500)]