20037040

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{73}}^2$

素因数の和:206

約数の個数: 60

約数和(自身を含む): 48237984

約数和(自身を除く): 28200944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 73, 80, 94, 146, 188, 235, 292, 365, 376, 470, 584, 730, 752, 940, 1168, 1460, 1880, 2920, 3431, 3760, 5329, 5840, 6862, 10658, 13724, 17155, 21316, 26645, 27448, 34310, 42632, 53290, 54896, 68620, 85264, 106580, 137240, 213160, 250463, 274480, 426320, 500926, 1001852, 1252315, 2003704, 2504630, 4007408, 5009260, 10018520, 20037040]

約数ペア:

[(1, 20037040), (2, 10018520), (4, 5009260), (5, 4007408), (8, 2504630), (10, 2003704), (16, 1252315), (20, 1001852), (40, 500926), (47, 426320), (73, 274480), (80, 250463), (94, 213160), (146, 137240), (188, 106580), (235, 85264), (292, 68620), (365, 54896), (376, 53290), (470, 42632), (584, 34310), (730, 27448), (752, 26645), (940, 21316), (1168, 17155), (1460, 13724), (1880, 10658), (2920, 6862), (3431, 5840), (3760, 5329)]