20485040

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13477}}^1$

素因数の和:13509

約数の個数: 40

約数和(自身を含む): 50138160

約数和(自身を除く): 29653120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 13477, 26954, 53908, 67385, 107816, 134770, 215632, 256063, 269540, 512126, 539080, 1024252, 1078160, 1280315, 2048504, 2560630, 4097008, 5121260, 10242520, 20485040]

約数ペア:

[(1, 20485040), (2, 10242520), (4, 5121260), (5, 4097008), (8, 2560630), (10, 2048504), (16, 1280315), (19, 1078160), (20, 1024252), (38, 539080), (40, 512126), (76, 269540), (80, 256063), (95, 215632), (152, 134770), (190, 107816), (304, 67385), (380, 53908), (760, 26954), (1520, 13477)]