129712280

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{101}}^1\times {\mathrm{331}}^1$

素因数の和:540

約数の個数: 64

約数和(自身を含む): 298680480

約数和(自身を除く): 168968200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 101, 194, 202, 331, 388, 404, 485, 505, 662, 776, 808, 970, 1010, 1324, 1655, 1940, 2020, 2648, 3310, 3880, 4040, 6620, 9797, 13240, 19594, 32107, 33431, 39188, 48985, 64214, 66862, 78376, 97970, 128428, 133724, 160535, 167155, 195940, 256856, 267448, 321070, 334310, 391880, 642140, 668620, 1284280, 1337240, 3242807, 6485614, 12971228, 16214035, 25942456, 32428070, 64856140, 129712280]

約数ペア:

[(1, 129712280), (2, 64856140), (4, 32428070), (5, 25942456), (8, 16214035), (10, 12971228), (20, 6485614), (40, 3242807), (97, 1337240), (101, 1284280), (194, 668620), (202, 642140), (331, 391880), (388, 334310), (404, 321070), (485, 267448), (505, 256856), (662, 195940), (776, 167155), (808, 160535), (970, 133724), (1010, 128428), (1324, 97970), (1655, 78376), (1940, 66862), (2020, 64214), (2648, 48985), (3310, 39188), (3880, 33431), (4040, 32107), (6620, 19594), (9797, 13240)]