21003250

素因数分解:

$2^1\times 5^3\times {\mathrm{29}}^1\times {\mathrm{2897}}^1$

素因数の和:2943

約数の個数: 32

約数和(自身を含む): 40687920

約数和(自身を除く): 19684670

約数列:

[1, 2, 5, 10, 25, 29, 50, 58, 125, 145, 250, 290, 725, 1450, 2897, 3625, 5794, 7250, 14485, 28970, 72425, 84013, 144850, 168026, 362125, 420065, 724250, 840130, 2100325, 4200650, 10501625, 21003250]

約数ペア:

[(1, 21003250), (2, 10501625), (5, 4200650), (10, 2100325), (25, 840130), (29, 724250), (50, 420065), (58, 362125), (125, 168026), (145, 144850), (250, 84013), (290, 72425), (725, 28970), (1450, 14485), (2897, 7250), (3625, 5794)]