21030416

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{331}}^1$

素因数の和:388

約数の個数: 60

約数和(自身を含む): 47055024

約数和(自身を除く): 26024608

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 38, 44, 76, 88, 152, 176, 209, 304, 331, 361, 418, 662, 722, 836, 1324, 1444, 1672, 2648, 2888, 3344, 3641, 3971, 5296, 5776, 6289, 7282, 7942, 12578, 14564, 15884, 25156, 29128, 31768, 50312, 58256, 63536, 69179, 100624, 119491, 138358, 238982, 276716, 477964, 553432, 955928, 1106864, 1314401, 1911856, 2628802, 5257604, 10515208, 21030416]

約数ペア:

[(1, 21030416), (2, 10515208), (4, 5257604), (8, 2628802), (11, 1911856), (16, 1314401), (19, 1106864), (22, 955928), (38, 553432), (44, 477964), (76, 276716), (88, 238982), (152, 138358), (176, 119491), (209, 100624), (304, 69179), (331, 63536), (361, 58256), (418, 50312), (662, 31768), (722, 29128), (836, 25156), (1324, 15884), (1444, 14564), (1672, 12578), (2648, 7942), (2888, 7282), (3344, 6289), (3641, 5776), (3971, 5296)]