21190770

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{1361}}^1$

素因数の和:1547

約数の個数: 48

約数和(自身を含む): 55455192

約数和(自身を除く): 34264422

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 173, 346, 519, 865, 1038, 1361, 1557, 1730, 2595, 2722, 3114, 4083, 5190, 6805, 7785, 8166, 12249, 13610, 15570, 20415, 24498, 40830, 61245, 122490, 235453, 470906, 706359, 1177265, 1412718, 2119077, 2354530, 3531795, 4238154, 7063590, 10595385, 21190770]

約数ペア:

[(1, 21190770), (2, 10595385), (3, 7063590), (5, 4238154), (6, 3531795), (9, 2354530), (10, 2119077), (15, 1412718), (18, 1177265), (30, 706359), (45, 470906), (90, 235453), (173, 122490), (346, 61245), (519, 40830), (865, 24498), (1038, 20415), (1361, 15570), (1557, 13610), (1730, 12249), (2595, 8166), (2722, 7785), (3114, 6805), (4083, 5190)]