20961930400

素因数分解:

$2^5\times 5^2\times {\mathrm{163}}^1\times {\mathrm{160751}}^1$

素因数の和:160934

約数の個数: 72

約数和(自身を含む): 51487579584

約数和(自身を除く): 30525649184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 163, 200, 326, 400, 652, 800, 815, 1304, 1630, 2608, 3260, 4075, 5216, 6520, 8150, 13040, 16300, 26080, 32600, 65200, 130400, 160751, 321502, 643004, 803755, 1286008, 1607510, 2572016, 3215020, 4018775, 5144032, 6430040, 8037550, 12860080, 16075100, 25720160, 26202413, 32150200, 52404826, 64300400, 104809652, 128600800, 131012065, 209619304, 262024130, 419238608, 524048260, 655060325, 838477216, 1048096520, 1310120650, 2096193040, 2620241300, 4192386080, 5240482600, 10480965200, 20961930400]

約数ペア:

[(1, 20961930400), (2, 10480965200), (4, 5240482600), (5, 4192386080), (8, 2620241300), (10, 2096193040), (16, 1310120650), (20, 1048096520), (25, 838477216), (32, 655060325), (40, 524048260), (50, 419238608), (80, 262024130), (100, 209619304), (160, 131012065), (163, 128600800), (200, 104809652), (326, 64300400), (400, 52404826), (652, 32150200), (800, 26202413), (815, 25720160), (1304, 16075100), (1630, 12860080), (2608, 8037550), (3260, 6430040), (4075, 5144032), (5216, 4018775), (6520, 3215020), (8150, 2572016), (13040, 1607510), (16300, 1286008), (26080, 803755), (32600, 643004), (65200, 321502), (130400, 160751)]