20040560

素因数分解:

$2^4\times 5^1\times {\mathrm{397}}^1\times {\mathrm{631}}^1$

素因数の和:1041

約数の個数: 40

約数和(自身を含む): 46785696

約数和(自身を除く): 26745136

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 397, 631, 794, 1262, 1588, 1985, 2524, 3155, 3176, 3970, 5048, 6310, 6352, 7940, 10096, 12620, 15880, 25240, 31760, 50480, 250507, 501014, 1002028, 1252535, 2004056, 2505070, 4008112, 5010140, 10020280, 20040560]

約数ペア:

[(1, 20040560), (2, 10020280), (4, 5010140), (5, 4008112), (8, 2505070), (10, 2004056), (16, 1252535), (20, 1002028), (40, 501014), (80, 250507), (397, 50480), (631, 31760), (794, 25240), (1262, 15880), (1588, 12620), (1985, 10096), (2524, 7940), (3155, 6352), (3176, 6310), (3970, 5048)]