781280

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{257}}^1$

素因数の和:291

約数の個数: 48

約数和(自身を含む): 1950480

約数和(自身を除く): 1169200

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 257, 304, 380, 514, 608, 760, 1028, 1285, 1520, 2056, 2570, 3040, 4112, 4883, 5140, 8224, 9766, 10280, 19532, 20560, 24415, 39064, 41120, 48830, 78128, 97660, 156256, 195320, 390640, 781280]

約数ペア:

[(1, 781280), (2, 390640), (4, 195320), (5, 156256), (8, 97660), (10, 78128), (16, 48830), (19, 41120), (20, 39064), (32, 24415), (38, 20560), (40, 19532), (76, 10280), (80, 9766), (95, 8224), (152, 5140), (160, 4883), (190, 4112), (257, 3040), (304, 2570), (380, 2056), (514, 1520), (608, 1285), (760, 1028)]