81487360

素因数分解:

$2^9\times 5^1\times {\mathrm{139}}^1\times {\mathrm{229}}^1$

素因数の和:391

約数の個数: 80

約数和(自身を含む): 197643600

約数和(自身を除く): 116156240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 139, 160, 229, 256, 278, 320, 458, 512, 556, 640, 695, 916, 1112, 1145, 1280, 1390, 1832, 2224, 2290, 2560, 2780, 3664, 4448, 4580, 5560, 7328, 8896, 9160, 11120, 14656, 17792, 18320, 22240, 29312, 31831, 35584, 36640, 44480, 58624, 63662, 71168, 73280, 88960, 117248, 127324, 146560, 159155, 177920, 254648, 293120, 318310, 355840, 509296, 586240, 636620, 1018592, 1273240, 2037184, 2546480, 4074368, 5092960, 8148736, 10185920, 16297472, 20371840, 40743680, 81487360]

約数ペア:

[(1, 81487360), (2, 40743680), (4, 20371840), (5, 16297472), (8, 10185920), (10, 8148736), (16, 5092960), (20, 4074368), (32, 2546480), (40, 2037184), (64, 1273240), (80, 1018592), (128, 636620), (139, 586240), (160, 509296), (229, 355840), (256, 318310), (278, 293120), (320, 254648), (458, 177920), (512, 159155), (556, 146560), (640, 127324), (695, 117248), (916, 88960), (1112, 73280), (1145, 71168), (1280, 63662), (1390, 58624), (1832, 44480), (2224, 36640), (2290, 35584), (2560, 31831), (2780, 29312), (3664, 22240), (4448, 18320), (4580, 17792), (5560, 14656), (7328, 11120), (8896, 9160)]