21000279780

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1254497}}^1$

素因数の和:1254546

約数の個数: 96

約数和(自身を含む): 67441812480

約数和(自身を除く): 46441532700

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 31, 36, 45, 54, 60, 62, 90, 93, 108, 124, 135, 155, 180, 186, 270, 279, 310, 372, 465, 540, 558, 620, 837, 930, 1116, 1395, 1674, 1860, 2790, 3348, 4185, 5580, 8370, 16740, 1254497, 2508994, 3763491, 5017988, 6272485, 7526982, 11290473, 12544970, 15053964, 18817455, 22580946, 25089940, 33871419, 37634910, 38889407, 45161892, 56452365, 67742838, 75269820, 77778814, 112904730, 116668221, 135485676, 155557628, 169357095, 194447035, 225809460, 233336442, 338714190, 350004663, 388894070, 466672884, 583341105, 677428380, 700009326, 777788140, 1050013989, 1166682210, 1400018652, 1750023315, 2100027978, 2333364420, 3500046630, 4200055956, 5250069945, 7000093260, 10500139890, 21000279780]

約数ペア:

[(1, 21000279780), (2, 10500139890), (3, 7000093260), (4, 5250069945), (5, 4200055956), (6, 3500046630), (9, 2333364420), (10, 2100027978), (12, 1750023315), (15, 1400018652), (18, 1166682210), (20, 1050013989), (27, 777788140), (30, 700009326), (31, 677428380), (36, 583341105), (45, 466672884), (54, 388894070), (60, 350004663), (62, 338714190), (90, 233336442), (93, 225809460), (108, 194447035), (124, 169357095), (135, 155557628), (155, 135485676), (180, 116668221), (186, 112904730), (270, 77778814), (279, 75269820), (310, 67742838), (372, 56452365), (465, 45161892), (540, 38889407), (558, 37634910), (620, 33871419), (837, 25089940), (930, 22580946), (1116, 18817455), (1395, 15053964), (1674, 12544970), (1860, 11290473), (2790, 7526982), (3348, 6272485), (4185, 5017988), (5580, 3763491), (8370, 2508994), (16740, 1254497)]