259198420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{21211}}^1$

素因数の和:21280

約数の個数: 48

約数和(自身を含む): 598687488

約数和(自身を除く): 339489068

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 47, 52, 65, 94, 130, 188, 235, 260, 470, 611, 940, 1222, 2444, 3055, 6110, 12220, 21211, 42422, 84844, 106055, 212110, 275743, 424220, 551486, 996917, 1102972, 1378715, 1993834, 2757430, 3987668, 4984585, 5514860, 9969170, 12959921, 19938340, 25919842, 51839684, 64799605, 129599210, 259198420]

約数ペア:

[(1, 259198420), (2, 129599210), (4, 64799605), (5, 51839684), (10, 25919842), (13, 19938340), (20, 12959921), (26, 9969170), (47, 5514860), (52, 4984585), (65, 3987668), (94, 2757430), (130, 1993834), (188, 1378715), (235, 1102972), (260, 996917), (470, 551486), (611, 424220), (940, 275743), (1222, 212110), (2444, 106055), (3055, 84844), (6110, 42422), (12220, 21211)]