21994720

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{12497}}^1$

素因数の和:12523

約数の個数: 48

約数和(自身を含む): 56690928

約数和(自身を除く): 34696208

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 12497, 24994, 49988, 62485, 99976, 124970, 137467, 199952, 249940, 274934, 399904, 499880, 549868, 687335, 999760, 1099736, 1374670, 1999520, 2199472, 2749340, 4398944, 5498680, 10997360, 21994720]

約数ペア:

[(1, 21994720), (2, 10997360), (4, 5498680), (5, 4398944), (8, 2749340), (10, 2199472), (11, 1999520), (16, 1374670), (20, 1099736), (22, 999760), (32, 687335), (40, 549868), (44, 499880), (55, 399904), (80, 274934), (88, 249940), (110, 199952), (160, 137467), (176, 124970), (220, 99976), (352, 62485), (440, 49988), (880, 24994), (1760, 12497)]