39908480

素因数分解:

$2^7\times 5^1\times {\mathrm{127}}^1\times {\mathrm{491}}^1$

素因数の和:637

約数の個数: 64

約数和(自身を含む): 96353280

約数和(自身を除く): 56444800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 128, 160, 254, 320, 491, 508, 635, 640, 982, 1016, 1270, 1964, 2032, 2455, 2540, 3928, 4064, 4910, 5080, 7856, 8128, 9820, 10160, 15712, 16256, 19640, 20320, 31424, 39280, 40640, 62357, 62848, 78560, 81280, 124714, 157120, 249428, 311785, 314240, 498856, 623570, 997712, 1247140, 1995424, 2494280, 3990848, 4988560, 7981696, 9977120, 19954240, 39908480]

約数ペア:

[(1, 39908480), (2, 19954240), (4, 9977120), (5, 7981696), (8, 4988560), (10, 3990848), (16, 2494280), (20, 1995424), (32, 1247140), (40, 997712), (64, 623570), (80, 498856), (127, 314240), (128, 311785), (160, 249428), (254, 157120), (320, 124714), (491, 81280), (508, 78560), (635, 62848), (640, 62357), (982, 40640), (1016, 39280), (1270, 31424), (1964, 20320), (2032, 19640), (2455, 16256), (2540, 15712), (3928, 10160), (4064, 9820), (4910, 8128), (5080, 7856)]