21693920

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{3307}}^1$

素因数の和:3363

約数の個数: 48

約数和(自身を含む): 52517808

約数和(自身を除く): 30823888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 80, 82, 160, 164, 205, 328, 410, 656, 820, 1312, 1640, 3280, 3307, 6560, 6614, 13228, 16535, 26456, 33070, 52912, 66140, 105824, 132280, 135587, 264560, 271174, 529120, 542348, 677935, 1084696, 1355870, 2169392, 2711740, 4338784, 5423480, 10846960, 21693920]

約数ペア:

[(1, 21693920), (2, 10846960), (4, 5423480), (5, 4338784), (8, 2711740), (10, 2169392), (16, 1355870), (20, 1084696), (32, 677935), (40, 542348), (41, 529120), (80, 271174), (82, 264560), (160, 135587), (164, 132280), (205, 105824), (328, 66140), (410, 52912), (656, 33070), (820, 26456), (1312, 16535), (1640, 13228), (3280, 6614), (3307, 6560)]