665492050

素因数分解:

$2^1\times 5^2\times {\mathrm{79}}^1\times {\mathrm{331}}^1\times {\mathrm{509}}^1$

素因数の和:931

約数の個数: 48

約数和(自身を含む): 1259740800

約数和(自身を除く): 594248750

約数列:

[1, 2, 5, 10, 25, 50, 79, 158, 331, 395, 509, 662, 790, 1018, 1655, 1975, 2545, 3310, 3950, 5090, 8275, 12725, 16550, 25450, 26149, 40211, 52298, 80422, 130745, 168479, 201055, 261490, 336958, 402110, 653725, 842395, 1005275, 1307450, 1684790, 2010550, 4211975, 8423950, 13309841, 26619682, 66549205, 133098410, 332746025, 665492050]

約数ペア:

[(1, 665492050), (2, 332746025), (5, 133098410), (10, 66549205), (25, 26619682), (50, 13309841), (79, 8423950), (158, 4211975), (331, 2010550), (395, 1684790), (509, 1307450), (662, 1005275), (790, 842395), (1018, 653725), (1655, 402110), (1975, 336958), (2545, 261490), (3310, 201055), (3950, 168479), (5090, 130745), (8275, 80422), (12725, 52298), (16550, 40211), (25450, 26149)]