2578420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{211}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 5983488

約数和(自身を除く): 3405068

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 47, 52, 65, 94, 130, 188, 211, 235, 260, 422, 470, 611, 844, 940, 1055, 1222, 2110, 2444, 2743, 3055, 4220, 5486, 6110, 9917, 10972, 12220, 13715, 19834, 27430, 39668, 49585, 54860, 99170, 128921, 198340, 257842, 515684, 644605, 1289210, 2578420]

約数ペア:

[(1, 2578420), (2, 1289210), (4, 644605), (5, 515684), (10, 257842), (13, 198340), (20, 128921), (26, 99170), (47, 54860), (52, 49585), (65, 39668), (94, 27430), (130, 19834), (188, 13715), (211, 12220), (235, 10972), (260, 9917), (422, 6110), (470, 5486), (611, 4220), (844, 3055), (940, 2743), (1055, 2444), (1222, 2110)]