209400980

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{2503}}^1$

素因数の和:2648

約数の個数: 48

約数和(自身を含む): 454325760

約数和(自身を除く): 244924780

約数列:

[1, 2, 4, 5, 10, 20, 47, 89, 94, 178, 188, 235, 356, 445, 470, 890, 940, 1780, 2503, 4183, 5006, 8366, 10012, 12515, 16732, 20915, 25030, 41830, 50060, 83660, 117641, 222767, 235282, 445534, 470564, 588205, 891068, 1113835, 1176410, 2227670, 2352820, 4455340, 10470049, 20940098, 41880196, 52350245, 104700490, 209400980]

約数ペア:

[(1, 209400980), (2, 104700490), (4, 52350245), (5, 41880196), (10, 20940098), (20, 10470049), (47, 4455340), (89, 2352820), (94, 2227670), (178, 1176410), (188, 1113835), (235, 891068), (356, 588205), (445, 470564), (470, 445534), (890, 235282), (940, 222767), (1780, 117641), (2503, 83660), (4183, 50060), (5006, 41830), (8366, 25030), (10012, 20915), (12515, 16732)]