20120925

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^3$

素因数の和:111

約数の個数: 48

約数和(自身を含む): 37586880

約数和(自身を除く): 17465955

約数列:

[1, 3, 5, 11, 15, 25, 29, 33, 55, 75, 87, 145, 165, 275, 319, 435, 725, 825, 841, 957, 1595, 2175, 2523, 4205, 4785, 7975, 9251, 12615, 21025, 23925, 24389, 27753, 46255, 63075, 73167, 121945, 138765, 231275, 268279, 365835, 609725, 693825, 804837, 1341395, 1829175, 4024185, 6706975, 20120925]

約数ペア:

[(1, 20120925), (3, 6706975), (5, 4024185), (11, 1829175), (15, 1341395), (25, 804837), (29, 693825), (33, 609725), (55, 365835), (75, 268279), (87, 231275), (145, 138765), (165, 121945), (275, 73167), (319, 63075), (435, 46255), (725, 27753), (825, 24389), (841, 23925), (957, 21025), (1595, 12615), (2175, 9251), (2523, 7975), (4205, 4785)]