21373669120

素因数分解:

$2^8\times 5^1\times {\mathrm{2957}}^1\times {\mathrm{5647}}^1$

素因数の和:8625

約数の個数: 72

約数和(自身を含む): 51222999744

約数和(自身を除く): 29849330624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 2957, 5647, 5914, 11294, 11828, 14785, 22588, 23656, 28235, 29570, 45176, 47312, 56470, 59140, 90352, 94624, 112940, 118280, 180704, 189248, 225880, 236560, 361408, 378496, 451760, 473120, 722816, 756992, 903520, 946240, 1445632, 1807040, 1892480, 3614080, 3784960, 7228160, 16698179, 33396358, 66792716, 83490895, 133585432, 166981790, 267170864, 333963580, 534341728, 667927160, 1068683456, 1335854320, 2137366912, 2671708640, 4274733824, 5343417280, 10686834560, 21373669120]

約数ペア:

[(1, 21373669120), (2, 10686834560), (4, 5343417280), (5, 4274733824), (8, 2671708640), (10, 2137366912), (16, 1335854320), (20, 1068683456), (32, 667927160), (40, 534341728), (64, 333963580), (80, 267170864), (128, 166981790), (160, 133585432), (256, 83490895), (320, 66792716), (640, 33396358), (1280, 16698179), (2957, 7228160), (5647, 3784960), (5914, 3614080), (11294, 1892480), (11828, 1807040), (14785, 1445632), (22588, 946240), (23656, 903520), (28235, 756992), (29570, 722816), (45176, 473120), (47312, 451760), (56470, 378496), (59140, 361408), (90352, 236560), (94624, 225880), (112940, 189248), (118280, 180704)]