19776224

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{347}}^1$

素因数の和:507

約数の個数: 48

約数和(自身を含む): 42357168

約数和(自身を除く): 22580944

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 137, 208, 274, 347, 416, 548, 694, 1096, 1388, 1781, 2192, 2776, 3562, 4384, 4511, 5552, 7124, 9022, 11104, 14248, 18044, 28496, 36088, 47539, 56992, 72176, 95078, 144352, 190156, 380312, 618007, 760624, 1236014, 1521248, 2472028, 4944056, 9888112, 19776224]

約数ペア:

[(1, 19776224), (2, 9888112), (4, 4944056), (8, 2472028), (13, 1521248), (16, 1236014), (26, 760624), (32, 618007), (52, 380312), (104, 190156), (137, 144352), (208, 95078), (274, 72176), (347, 56992), (416, 47539), (548, 36088), (694, 28496), (1096, 18044), (1388, 14248), (1781, 11104), (2192, 9022), (2776, 7124), (3562, 5552), (4384, 4511)]