20525200

素因数分解:

$2^4\times 5^2\times {\mathrm{23}}^2\times {\mathrm{97}}^1$

素因数の和:161

約数の個数: 90

約数和(自身を含む): 52080434

約数和(自身を除く): 31555234

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 25, 40, 46, 50, 80, 92, 97, 100, 115, 184, 194, 200, 230, 368, 388, 400, 460, 485, 529, 575, 776, 920, 970, 1058, 1150, 1552, 1840, 1940, 2116, 2231, 2300, 2425, 2645, 3880, 4232, 4462, 4600, 4850, 5290, 7760, 8464, 8924, 9200, 9700, 10580, 11155, 13225, 17848, 19400, 21160, 22310, 26450, 35696, 38800, 42320, 44620, 51313, 52900, 55775, 89240, 102626, 105800, 111550, 178480, 205252, 211600, 223100, 256565, 410504, 446200, 513130, 821008, 892400, 1026260, 1282825, 2052520, 2565650, 4105040, 5131300, 10262600, 20525200]

約数ペア:

[(1, 20525200), (2, 10262600), (4, 5131300), (5, 4105040), (8, 2565650), (10, 2052520), (16, 1282825), (20, 1026260), (23, 892400), (25, 821008), (40, 513130), (46, 446200), (50, 410504), (80, 256565), (92, 223100), (97, 211600), (100, 205252), (115, 178480), (184, 111550), (194, 105800), (200, 102626), (230, 89240), (368, 55775), (388, 52900), (400, 51313), (460, 44620), (485, 42320), (529, 38800), (575, 35696), (776, 26450), (920, 22310), (970, 21160), (1058, 19400), (1150, 17848), (1552, 13225), (1840, 11155), (1940, 10580), (2116, 9700), (2231, 9200), (2300, 8924), (2425, 8464), (2645, 7760), (3880, 5290), (4232, 4850), (4462, 4600)]