28921880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{55619}}^1$

素因数の和:55643

約数の個数: 32

約数和(自身を含む): 70081200

約数和(自身を除く): 41159320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 55619, 111238, 222476, 278095, 444952, 556190, 723047, 1112380, 1446094, 2224760, 2892188, 3615235, 5784376, 7230470, 14460940, 28921880]

約数ペア:

[(1, 28921880), (2, 14460940), (4, 7230470), (5, 5784376), (8, 3615235), (10, 2892188), (13, 2224760), (20, 1446094), (26, 1112380), (40, 723047), (52, 556190), (65, 444952), (104, 278095), (130, 222476), (260, 111238), (520, 55619)]