21261450

素因数分解:

$2^1\times 3^1\times 5^2\times 7^1\times {\mathrm{20249}}^1$

素因数の和:20271

約数の個数: 48

約数和(自身を含む): 60264000

約数和(自身を除く): 39002550

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 25, 30, 35, 42, 50, 70, 75, 105, 150, 175, 210, 350, 525, 1050, 20249, 40498, 60747, 101245, 121494, 141743, 202490, 283486, 303735, 425229, 506225, 607470, 708715, 850458, 1012450, 1417430, 1518675, 2126145, 3037350, 3543575, 4252290, 7087150, 10630725, 21261450]

約数ペア:

[(1, 21261450), (2, 10630725), (3, 7087150), (5, 4252290), (6, 3543575), (7, 3037350), (10, 2126145), (14, 1518675), (15, 1417430), (21, 1012450), (25, 850458), (30, 708715), (35, 607470), (42, 506225), (50, 425229), (70, 303735), (75, 283486), (105, 202490), (150, 141743), (175, 121494), (210, 101245), (350, 60747), (525, 40498), (1050, 20249)]