215131345

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1609}}^1$

素因数の和:1666

約数の個数: 48

約数和(自身を含む): 323764560

約数和(自身を除く): 108633215

約数列:

[1, 5, 11, 13, 17, 55, 65, 85, 121, 143, 187, 221, 605, 715, 935, 1105, 1573, 1609, 2057, 2431, 7865, 8045, 10285, 12155, 17699, 20917, 26741, 27353, 88495, 104585, 133705, 136765, 194689, 230087, 300883, 355589, 973445, 1150435, 1504415, 1777945, 2530957, 3309713, 3911479, 12654785, 16548565, 19557395, 43026269, 215131345]

約数ペア:

[(1, 215131345), (5, 43026269), (11, 19557395), (13, 16548565), (17, 12654785), (55, 3911479), (65, 3309713), (85, 2530957), (121, 1777945), (143, 1504415), (187, 1150435), (221, 973445), (605, 355589), (715, 300883), (935, 230087), (1105, 194689), (1573, 136765), (1609, 133705), (2057, 104585), (2431, 88495), (7865, 27353), (8045, 26741), (10285, 20917), (12155, 17699)]