257780440

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{109229}}^1$

素因数の和:109299

約数の個数: 32

約数和(自身を含む): 589842000

約数和(自身を除く): 332061560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 118, 236, 295, 472, 590, 1180, 2360, 109229, 218458, 436916, 546145, 873832, 1092290, 2184580, 4369160, 6444511, 12889022, 25778044, 32222555, 51556088, 64445110, 128890220, 257780440]

約数ペア:

[(1, 257780440), (2, 128890220), (4, 64445110), (5, 51556088), (8, 32222555), (10, 25778044), (20, 12889022), (40, 6444511), (59, 4369160), (118, 2184580), (236, 1092290), (295, 873832), (472, 546145), (590, 436916), (1180, 218458), (2360, 109229)]