21404944

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{173}}^1$

素因数の和:248

約数の個数: 80

約数和(自身を含む): 49193280

約数和(自身を除く): 27788336

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 37, 38, 44, 74, 76, 88, 148, 152, 173, 176, 209, 296, 304, 346, 407, 418, 592, 692, 703, 814, 836, 1384, 1406, 1628, 1672, 1903, 2768, 2812, 3256, 3287, 3344, 3806, 5624, 6401, 6512, 6574, 7612, 7733, 11248, 12802, 13148, 15224, 15466, 25604, 26296, 30448, 30932, 36157, 51208, 52592, 61864, 70411, 72314, 102416, 121619, 123728, 140822, 144628, 243238, 281644, 289256, 486476, 563288, 578512, 972952, 1126576, 1337809, 1945904, 2675618, 5351236, 10702472, 21404944]

約数ペア:

[(1, 21404944), (2, 10702472), (4, 5351236), (8, 2675618), (11, 1945904), (16, 1337809), (19, 1126576), (22, 972952), (37, 578512), (38, 563288), (44, 486476), (74, 289256), (76, 281644), (88, 243238), (148, 144628), (152, 140822), (173, 123728), (176, 121619), (209, 102416), (296, 72314), (304, 70411), (346, 61864), (407, 52592), (418, 51208), (592, 36157), (692, 30932), (703, 30448), (814, 26296), (836, 25604), (1384, 15466), (1406, 15224), (1628, 13148), (1672, 12802), (1903, 11248), (2768, 7733), (2812, 7612), (3256, 6574), (3287, 6512), (3344, 6401), (3806, 5624)]