20823440

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23663}}^1$

素因数の和:23687

約数の個数: 40

約数和(自身を含む): 52818048

約数和(自身を除く): 31994608

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 23663, 47326, 94652, 118315, 189304, 236630, 260293, 378608, 473260, 520586, 946520, 1041172, 1301465, 1893040, 2082344, 2602930, 4164688, 5205860, 10411720, 20823440]

約数ペア:

[(1, 20823440), (2, 10411720), (4, 5205860), (5, 4164688), (8, 2602930), (10, 2082344), (11, 1893040), (16, 1301465), (20, 1041172), (22, 946520), (40, 520586), (44, 473260), (55, 378608), (80, 260293), (88, 236630), (110, 189304), (176, 118315), (220, 94652), (440, 47326), (880, 23663)]