20058820

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1\times {\mathrm{191}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 43545600

約数和(自身を除く): 23486780

約数列:

[1, 2, 4, 5, 10, 20, 59, 89, 118, 178, 191, 236, 295, 356, 382, 445, 590, 764, 890, 955, 1180, 1780, 1910, 3820, 5251, 10502, 11269, 16999, 21004, 22538, 26255, 33998, 45076, 52510, 56345, 67996, 84995, 105020, 112690, 169990, 225380, 339980, 1002941, 2005882, 4011764, 5014705, 10029410, 20058820]

約数ペア:

[(1, 20058820), (2, 10029410), (4, 5014705), (5, 4011764), (10, 2005882), (20, 1002941), (59, 339980), (89, 225380), (118, 169990), (178, 112690), (191, 105020), (236, 84995), (295, 67996), (356, 56345), (382, 52510), (445, 45076), (590, 33998), (764, 26255), (890, 22538), (955, 21004), (1180, 16999), (1780, 11269), (1910, 10502), (3820, 5251)]