19816240

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13037}}^1$

素因数の和:13069

約数の個数: 40

約数和(自身を含む): 48501360

約数和(自身を除く): 28685120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 13037, 26074, 52148, 65185, 104296, 130370, 208592, 247703, 260740, 495406, 521480, 990812, 1042960, 1238515, 1981624, 2477030, 3963248, 4954060, 9908120, 19816240]

約数ペア:

[(1, 19816240), (2, 9908120), (4, 4954060), (5, 3963248), (8, 2477030), (10, 1981624), (16, 1238515), (19, 1042960), (20, 990812), (38, 521480), (40, 495406), (76, 260740), (80, 247703), (95, 208592), (152, 130370), (190, 104296), (304, 65185), (380, 52148), (760, 26074), (1520, 13037)]