19777664

素因数分解:

$2^7\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:241

約数の個数: 64

約数和(自身を含む): 42687000

約数和(自身を除く): 22909336

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 61, 64, 68, 122, 128, 136, 149, 244, 272, 298, 488, 544, 596, 976, 1037, 1088, 1192, 1952, 2074, 2176, 2384, 2533, 3904, 4148, 4768, 5066, 7808, 8296, 9089, 9536, 10132, 16592, 18178, 19072, 20264, 33184, 36356, 40528, 66368, 72712, 81056, 132736, 145424, 154513, 162112, 290848, 309026, 324224, 581696, 618052, 1163392, 1236104, 2472208, 4944416, 9888832, 19777664]

約数ペア:

[(1, 19777664), (2, 9888832), (4, 4944416), (8, 2472208), (16, 1236104), (17, 1163392), (32, 618052), (34, 581696), (61, 324224), (64, 309026), (68, 290848), (122, 162112), (128, 154513), (136, 145424), (149, 132736), (244, 81056), (272, 72712), (298, 66368), (488, 40528), (544, 36356), (596, 33184), (976, 20264), (1037, 19072), (1088, 18178), (1192, 16592), (1952, 10132), (2074, 9536), (2176, 9089), (2384, 8296), (2533, 7808), (3904, 5066), (4148, 4768)]