19602990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19801}}^1$

素因数の和:19825

約数の個数: 48

約数和(自身を含む): 55604016

約数和(自身を除く): 36001026

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990, 19801, 39602, 59403, 99005, 118806, 178209, 198010, 217811, 297015, 356418, 435622, 594030, 653433, 891045, 1089055, 1306866, 1782090, 1960299, 2178110, 3267165, 3920598, 6534330, 9801495, 19602990]

約数ペア:

[(1, 19602990), (2, 9801495), (3, 6534330), (5, 3920598), (6, 3267165), (9, 2178110), (10, 1960299), (11, 1782090), (15, 1306866), (18, 1089055), (22, 891045), (30, 653433), (33, 594030), (45, 435622), (55, 356418), (66, 297015), (90, 217811), (99, 198010), (110, 178209), (165, 118806), (198, 99005), (330, 59403), (495, 39602), (990, 19801)]