251015680

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3163}}^1$

素因数の和:3217

約数の個数: 80

約数和(自身を含む): 621460224

約数和(自身を除く): 370444544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 992, 1240, 1280, 1984, 2480, 2560, 3163, 3968, 4960, 6326, 7936, 9920, 12652, 15815, 15872, 19840, 25304, 31630, 39680, 50608, 63260, 79360, 98053, 101216, 126520, 196106, 202432, 253040, 392212, 404864, 490265, 506080, 784424, 809728, 980530, 1012160, 1568848, 1619456, 1961060, 2024320, 3137696, 3922120, 4048640, 6275392, 7844240, 8097280, 12550784, 15688480, 25101568, 31376960, 50203136, 62753920, 125507840, 251015680]

約数ペア:

[(1, 251015680), (2, 125507840), (4, 62753920), (5, 50203136), (8, 31376960), (10, 25101568), (16, 15688480), (20, 12550784), (31, 8097280), (32, 7844240), (40, 6275392), (62, 4048640), (64, 3922120), (80, 3137696), (124, 2024320), (128, 1961060), (155, 1619456), (160, 1568848), (248, 1012160), (256, 980530), (310, 809728), (320, 784424), (496, 506080), (512, 490265), (620, 404864), (640, 392212), (992, 253040), (1240, 202432), (1280, 196106), (1984, 126520), (2480, 101216), (2560, 98053), (3163, 79360), (3968, 63260), (4960, 50608), (6326, 39680), (7936, 31630), (9920, 25304), (12652, 19840), (15815, 15872)]