256213419

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{967}}^1$

素因数の和:1056

約数の個数: 64

約数和(自身を含む): 452001792

約数和(自身を除く): 195788373

約数列:

[1, 3, 7, 11, 21, 31, 33, 37, 77, 93, 111, 217, 231, 259, 341, 407, 651, 777, 967, 1023, 1147, 1221, 2387, 2849, 2901, 3441, 6769, 7161, 8029, 8547, 10637, 12617, 20307, 24087, 29977, 31911, 35779, 37851, 74459, 88319, 89931, 107337, 209839, 223377, 250453, 264957, 329747, 393569, 629517, 751359, 989241, 1109149, 1180707, 2308229, 2754983, 3327447, 6924687, 7764043, 8264949, 12200639, 23292129, 36601917, 85404473, 256213419]

約数ペア:

[(1, 256213419), (3, 85404473), (7, 36601917), (11, 23292129), (21, 12200639), (31, 8264949), (33, 7764043), (37, 6924687), (77, 3327447), (93, 2754983), (111, 2308229), (217, 1180707), (231, 1109149), (259, 989241), (341, 751359), (407, 629517), (651, 393569), (777, 329747), (967, 264957), (1023, 250453), (1147, 223377), (1221, 209839), (2387, 107337), (2849, 89931), (2901, 88319), (3441, 74459), (6769, 37851), (7161, 35779), (8029, 31911), (8547, 29977), (10637, 24087), (12617, 20307)]