64941950

素因数分解:

$2^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{401}}^1$

素因数の和:533

約数の個数: 48

約数和(自身を含む): 125616960

約数和(自身を除く): 60675010

約数列:

[1, 2, 5, 10, 25, 41, 50, 79, 82, 158, 205, 395, 401, 410, 790, 802, 1025, 1975, 2005, 2050, 3239, 3950, 4010, 6478, 10025, 16195, 16441, 20050, 31679, 32390, 32882, 63358, 80975, 82205, 158395, 161950, 164410, 316790, 411025, 791975, 822050, 1298839, 1583950, 2597678, 6494195, 12988390, 32470975, 64941950]

約数ペア:

[(1, 64941950), (2, 32470975), (5, 12988390), (10, 6494195), (25, 2597678), (41, 1583950), (50, 1298839), (79, 822050), (82, 791975), (158, 411025), (205, 316790), (395, 164410), (401, 161950), (410, 158395), (790, 82205), (802, 80975), (1025, 63358), (1975, 32882), (2005, 32390), (2050, 31679), (3239, 20050), (3950, 16441), (4010, 16195), (6478, 10025)]