199984880

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{3209}}^1$

素因数の和:3282

約数の個数: 80

約数和(自身を含む): 501530400

約数和(自身を除く): 301545520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 41, 76, 80, 82, 95, 152, 164, 190, 205, 304, 328, 380, 410, 656, 760, 779, 820, 1520, 1558, 1640, 3116, 3209, 3280, 3895, 6232, 6418, 7790, 12464, 12836, 15580, 16045, 25672, 31160, 32090, 51344, 60971, 62320, 64180, 121942, 128360, 131569, 243884, 256720, 263138, 304855, 487768, 526276, 609710, 657845, 975536, 1052552, 1219420, 1315690, 2105104, 2438840, 2499811, 2631380, 4877680, 4999622, 5262760, 9999244, 10525520, 12499055, 19998488, 24998110, 39996976, 49996220, 99992440, 199984880]

約数ペア:

[(1, 199984880), (2, 99992440), (4, 49996220), (5, 39996976), (8, 24998110), (10, 19998488), (16, 12499055), (19, 10525520), (20, 9999244), (38, 5262760), (40, 4999622), (41, 4877680), (76, 2631380), (80, 2499811), (82, 2438840), (95, 2105104), (152, 1315690), (164, 1219420), (190, 1052552), (205, 975536), (304, 657845), (328, 609710), (380, 526276), (410, 487768), (656, 304855), (760, 263138), (779, 256720), (820, 243884), (1520, 131569), (1558, 128360), (1640, 121942), (3116, 64180), (3209, 62320), (3280, 60971), (3895, 51344), (6232, 32090), (6418, 31160), (7790, 25672), (12464, 16045), (12836, 15580)]