20473740

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16249}}^1$

素因数の和:16271

約数の個数: 72

約数和(自身を含む): 70980000

約数和(自身を除く): 50506260

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 16249, 32498, 48747, 64996, 81245, 97494, 113743, 146241, 162490, 194988, 227486, 243735, 292482, 324980, 341229, 454972, 487470, 568715, 584964, 682458, 731205, 974940, 1023687, 1137430, 1364916, 1462410, 1706145, 2047374, 2274860, 2924820, 3412290, 4094748, 5118435, 6824580, 10236870, 20473740]

約数ペア:

[(1, 20473740), (2, 10236870), (3, 6824580), (4, 5118435), (5, 4094748), (6, 3412290), (7, 2924820), (9, 2274860), (10, 2047374), (12, 1706145), (14, 1462410), (15, 1364916), (18, 1137430), (20, 1023687), (21, 974940), (28, 731205), (30, 682458), (35, 584964), (36, 568715), (42, 487470), (45, 454972), (60, 341229), (63, 324980), (70, 292482), (84, 243735), (90, 227486), (105, 194988), (126, 162490), (140, 146241), (180, 113743), (210, 97494), (252, 81245), (315, 64996), (420, 48747), (630, 32498), (1260, 16249)]