438880

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1$

素因数の和:239

約数の個数: 48

約数和(自身を含む): 1121904

約数和(自身を除く): 683024

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 211, 260, 416, 422, 520, 844, 1040, 1055, 1688, 2080, 2110, 2743, 3376, 4220, 5486, 6752, 8440, 10972, 13715, 16880, 21944, 27430, 33760, 43888, 54860, 87776, 109720, 219440, 438880]

約数ペア:

[(1, 438880), (2, 219440), (4, 109720), (5, 87776), (8, 54860), (10, 43888), (13, 33760), (16, 27430), (20, 21944), (26, 16880), (32, 13715), (40, 10972), (52, 8440), (65, 6752), (80, 5486), (104, 4220), (130, 3376), (160, 2743), (208, 2110), (211, 2080), (260, 1688), (416, 1055), (422, 1040), (520, 844)]