212315720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{312229}}^1$

素因数の和:312257

約数の個数: 32

約数和(自身を含む): 505812600

約数和(自身を除く): 293496880

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 312229, 624458, 1248916, 1561145, 2497832, 3122290, 5307893, 6244580, 10615786, 12489160, 21231572, 26539465, 42463144, 53078930, 106157860, 212315720]

約数ペア:

[(1, 212315720), (2, 106157860), (4, 53078930), (5, 42463144), (8, 26539465), (10, 21231572), (17, 12489160), (20, 10615786), (34, 6244580), (40, 5307893), (68, 3122290), (85, 2497832), (136, 1561145), (170, 1248916), (340, 624458), (680, 312229)]