20975820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{4789}}^1$

素因数の和:4874

約数の個数: 48

約数和(自身を含む): 59549280

約数和(自身を除く): 38573460

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 73, 146, 219, 292, 365, 438, 730, 876, 1095, 1460, 2190, 4380, 4789, 9578, 14367, 19156, 23945, 28734, 47890, 57468, 71835, 95780, 143670, 287340, 349597, 699194, 1048791, 1398388, 1747985, 2097582, 3495970, 4195164, 5243955, 6991940, 10487910, 20975820]

約数ペア:

[(1, 20975820), (2, 10487910), (3, 6991940), (4, 5243955), (5, 4195164), (6, 3495970), (10, 2097582), (12, 1747985), (15, 1398388), (20, 1048791), (30, 699194), (60, 349597), (73, 287340), (146, 143670), (219, 95780), (292, 71835), (365, 57468), (438, 47890), (730, 28734), (876, 23945), (1095, 19156), (1460, 14367), (2190, 9578), (4380, 4789)]