1987290

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{311}}^1$

素因数の和:395

約数の個数: 48

約数和(自身を含む): 5256576

約数和(自身を除く): 3269286

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 71, 90, 142, 213, 311, 355, 426, 622, 639, 710, 933, 1065, 1278, 1555, 1866, 2130, 2799, 3110, 3195, 4665, 5598, 6390, 9330, 13995, 22081, 27990, 44162, 66243, 110405, 132486, 198729, 220810, 331215, 397458, 662430, 993645, 1987290]

約数ペア:

[(1, 1987290), (2, 993645), (3, 662430), (5, 397458), (6, 331215), (9, 220810), (10, 198729), (15, 132486), (18, 110405), (30, 66243), (45, 44162), (71, 27990), (90, 22081), (142, 13995), (213, 9330), (311, 6390), (355, 5598), (426, 4665), (622, 3195), (639, 3110), (710, 2799), (933, 2130), (1065, 1866), (1278, 1555)]