28202980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{1619}}^1$

素因数の和:1708

約数の個数: 48

約数和(自身を含む): 64774080

約数和(自身を除く): 36571100

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 67, 130, 134, 260, 268, 335, 670, 871, 1340, 1619, 1742, 3238, 3484, 4355, 6476, 8095, 8710, 16190, 17420, 21047, 32380, 42094, 84188, 105235, 108473, 210470, 216946, 420940, 433892, 542365, 1084730, 1410149, 2169460, 2820298, 5640596, 7050745, 14101490, 28202980]

約数ペア:

[(1, 28202980), (2, 14101490), (4, 7050745), (5, 5640596), (10, 2820298), (13, 2169460), (20, 1410149), (26, 1084730), (52, 542365), (65, 433892), (67, 420940), (130, 216946), (134, 210470), (260, 108473), (268, 105235), (335, 84188), (670, 42094), (871, 32380), (1340, 21047), (1619, 17420), (1742, 16190), (3238, 8710), (3484, 8095), (4355, 6476)]