320435140

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{409}}^1\times {\mathrm{911}}^1$

素因数の和:1372

約数の個数: 48

約数和(自身を含む): 691004160

約数和(自身を除く): 370569020

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 409, 430, 818, 860, 911, 1636, 1822, 2045, 3644, 4090, 4555, 8180, 9110, 17587, 18220, 35174, 39173, 70348, 78346, 87935, 156692, 175870, 195865, 351740, 372599, 391730, 745198, 783460, 1490396, 1862995, 3725990, 7451980, 16021757, 32043514, 64087028, 80108785, 160217570, 320435140]

約数ペア:

[(1, 320435140), (2, 160217570), (4, 80108785), (5, 64087028), (10, 32043514), (20, 16021757), (43, 7451980), (86, 3725990), (172, 1862995), (215, 1490396), (409, 783460), (430, 745198), (818, 391730), (860, 372599), (911, 351740), (1636, 195865), (1822, 175870), (2045, 156692), (3644, 87935), (4090, 78346), (4555, 70348), (8180, 39173), (9110, 35174), (17587, 18220)]