1900547720

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{778913}}^1$

素因数の和:778985

約数の個数: 32

約数和(自身を含む): 4346340120

約数和(自身を除く): 2445792400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 778913, 1557826, 3115652, 3894565, 6231304, 7789130, 15578260, 31156520, 47513693, 95027386, 190054772, 237568465, 380109544, 475136930, 950273860, 1900547720]

約数ペア:

[(1, 1900547720), (2, 950273860), (4, 475136930), (5, 380109544), (8, 237568465), (10, 190054772), (20, 95027386), (40, 47513693), (61, 31156520), (122, 15578260), (244, 7789130), (305, 6231304), (488, 3894565), (610, 3115652), (1220, 1557826), (2440, 778913)]