138831440

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{1997}}^1$

素因数の和:2100

約数の個数: 80

約数和(自身を含む): 356762880

約数和(自身を除く): 217931440

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 79, 80, 88, 110, 158, 176, 220, 316, 395, 440, 632, 790, 869, 880, 1264, 1580, 1738, 1997, 3160, 3476, 3994, 4345, 6320, 6952, 7988, 8690, 9985, 13904, 15976, 17380, 19970, 21967, 31952, 34760, 39940, 43934, 69520, 79880, 87868, 109835, 157763, 159760, 175736, 219670, 315526, 351472, 439340, 631052, 788815, 878680, 1262104, 1577630, 1735393, 1757360, 2524208, 3155260, 3470786, 6310520, 6941572, 8676965, 12621040, 13883144, 17353930, 27766288, 34707860, 69415720, 138831440]

約数ペア:

[(1, 138831440), (2, 69415720), (4, 34707860), (5, 27766288), (8, 17353930), (10, 13883144), (11, 12621040), (16, 8676965), (20, 6941572), (22, 6310520), (40, 3470786), (44, 3155260), (55, 2524208), (79, 1757360), (80, 1735393), (88, 1577630), (110, 1262104), (158, 878680), (176, 788815), (220, 631052), (316, 439340), (395, 351472), (440, 315526), (632, 219670), (790, 175736), (869, 159760), (880, 157763), (1264, 109835), (1580, 87868), (1738, 79880), (1997, 69520), (3160, 43934), (3476, 39940), (3994, 34760), (4345, 31952), (6320, 21967), (6952, 19970), (7988, 17380), (8690, 15976), (9985, 13904)]