21001518

素因数分解:

$2^1\times 3^5\times {\mathrm{79}}^1\times {\mathrm{547}}^1$

素因数の和:643

約数の個数: 48

約数和(自身を含む): 47873280

約数和(自身を除く): 26871762

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 79, 81, 158, 162, 237, 243, 474, 486, 547, 711, 1094, 1422, 1641, 2133, 3282, 4266, 4923, 6399, 9846, 12798, 14769, 19197, 29538, 38394, 43213, 44307, 86426, 88614, 129639, 132921, 259278, 265842, 388917, 777834, 1166751, 2333502, 3500253, 7000506, 10500759, 21001518]

約数ペア:

[(1, 21001518), (2, 10500759), (3, 7000506), (6, 3500253), (9, 2333502), (18, 1166751), (27, 777834), (54, 388917), (79, 265842), (81, 259278), (158, 132921), (162, 129639), (237, 88614), (243, 86426), (474, 44307), (486, 43213), (547, 38394), (711, 29538), (1094, 19197), (1422, 14769), (1641, 12798), (2133, 9846), (3282, 6399), (4266, 4923)]