20974240

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{307}}^1$

素因数の和:390

約数の個数: 96

約数和(自身を含む): 57746304

約数和(自身を除く): 36772064

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 61, 70, 80, 112, 122, 140, 160, 224, 244, 280, 305, 307, 427, 488, 560, 610, 614, 854, 976, 1120, 1220, 1228, 1535, 1708, 1952, 2135, 2149, 2440, 2456, 3070, 3416, 4270, 4298, 4880, 4912, 6140, 6832, 8540, 8596, 9760, 9824, 10745, 12280, 13664, 17080, 17192, 18727, 21490, 24560, 34160, 34384, 37454, 42980, 49120, 68320, 68768, 74908, 85960, 93635, 131089, 149816, 171920, 187270, 262178, 299632, 343840, 374540, 524356, 599264, 655445, 749080, 1048712, 1310890, 1498160, 2097424, 2621780, 2996320, 4194848, 5243560, 10487120, 20974240]

約数ペア:

[(1, 20974240), (2, 10487120), (4, 5243560), (5, 4194848), (7, 2996320), (8, 2621780), (10, 2097424), (14, 1498160), (16, 1310890), (20, 1048712), (28, 749080), (32, 655445), (35, 599264), (40, 524356), (56, 374540), (61, 343840), (70, 299632), (80, 262178), (112, 187270), (122, 171920), (140, 149816), (160, 131089), (224, 93635), (244, 85960), (280, 74908), (305, 68768), (307, 68320), (427, 49120), (488, 42980), (560, 37454), (610, 34384), (614, 34160), (854, 24560), (976, 21490), (1120, 18727), (1220, 17192), (1228, 17080), (1535, 13664), (1708, 12280), (1952, 10745), (2135, 9824), (2149, 9760), (2440, 8596), (2456, 8540), (3070, 6832), (3416, 6140), (4270, 4912), (4298, 4880)]