201920900

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{2897}}^1$

素因数の和:2969

約数の個数: 72

約数和(自身を含む): 475422696

約数和(自身を除く): 273501796

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 41, 50, 68, 82, 85, 100, 164, 170, 205, 340, 410, 425, 697, 820, 850, 1025, 1394, 1700, 2050, 2788, 2897, 3485, 4100, 5794, 6970, 11588, 13940, 14485, 17425, 28970, 34850, 49249, 57940, 69700, 72425, 98498, 118777, 144850, 196996, 237554, 246245, 289700, 475108, 492490, 593885, 984980, 1187770, 1231225, 2019209, 2375540, 2462450, 2969425, 4038418, 4924900, 5938850, 8076836, 10096045, 11877700, 20192090, 40384180, 50480225, 100960450, 201920900]

約数ペア:

[(1, 201920900), (2, 100960450), (4, 50480225), (5, 40384180), (10, 20192090), (17, 11877700), (20, 10096045), (25, 8076836), (34, 5938850), (41, 4924900), (50, 4038418), (68, 2969425), (82, 2462450), (85, 2375540), (100, 2019209), (164, 1231225), (170, 1187770), (205, 984980), (340, 593885), (410, 492490), (425, 475108), (697, 289700), (820, 246245), (850, 237554), (1025, 196996), (1394, 144850), (1700, 118777), (2050, 98498), (2788, 72425), (2897, 69700), (3485, 57940), (4100, 49249), (5794, 34850), (6970, 28970), (11588, 17425), (13940, 14485)]