419629880

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{1063}}^1$

素因数の和:1284

約数の個数: 64

約数和(自身を含む): 965260800

約数和(自身を除く): 545630920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 139, 142, 278, 284, 355, 556, 568, 695, 710, 1063, 1112, 1390, 1420, 2126, 2780, 2840, 4252, 5315, 5560, 8504, 9869, 10630, 19738, 21260, 39476, 42520, 49345, 75473, 78952, 98690, 147757, 150946, 197380, 295514, 301892, 377365, 394760, 591028, 603784, 738785, 754730, 1182056, 1477570, 1509460, 2955140, 3018920, 5910280, 10490747, 20981494, 41962988, 52453735, 83925976, 104907470, 209814940, 419629880]

約数ペア:

[(1, 419629880), (2, 209814940), (4, 104907470), (5, 83925976), (8, 52453735), (10, 41962988), (20, 20981494), (40, 10490747), (71, 5910280), (139, 3018920), (142, 2955140), (278, 1509460), (284, 1477570), (355, 1182056), (556, 754730), (568, 738785), (695, 603784), (710, 591028), (1063, 394760), (1112, 377365), (1390, 301892), (1420, 295514), (2126, 197380), (2780, 150946), (2840, 147757), (4252, 98690), (5315, 78952), (5560, 75473), (8504, 49345), (9869, 42520), (10630, 39476), (19738, 21260)]