21023120

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13831}}^1$

素因数の和:13863

約数の個数: 40

約数和(自身を含む): 51455040

約数和(自身を除く): 30431920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 13831, 27662, 55324, 69155, 110648, 138310, 221296, 262789, 276620, 525578, 553240, 1051156, 1106480, 1313945, 2102312, 2627890, 4204624, 5255780, 10511560, 21023120]

約数ペア:

[(1, 21023120), (2, 10511560), (4, 5255780), (5, 4204624), (8, 2627890), (10, 2102312), (16, 1313945), (19, 1106480), (20, 1051156), (38, 553240), (40, 525578), (76, 276620), (80, 262789), (95, 221296), (152, 138310), (190, 110648), (304, 69155), (380, 55324), (760, 27662), (1520, 13831)]