18621520

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{12251}}^1$

素因数の和:12283

約数の個数: 40

約数和(自身を含む): 45577440

約数和(自身を除く): 26955920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 12251, 24502, 49004, 61255, 98008, 122510, 196016, 232769, 245020, 465538, 490040, 931076, 980080, 1163845, 1862152, 2327690, 3724304, 4655380, 9310760, 18621520]

約数ペア:

[(1, 18621520), (2, 9310760), (4, 4655380), (5, 3724304), (8, 2327690), (10, 1862152), (16, 1163845), (19, 980080), (20, 931076), (38, 490040), (40, 465538), (76, 245020), (80, 232769), (95, 196016), (152, 122510), (190, 98008), (304, 61255), (380, 49004), (760, 24502), (1520, 12251)]