20863216

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{367}}^1$

素因数の和:422

約数の個数: 80

約数和(自身を含む): 49282560

約数和(自身を除く): 28419344

約数列:

[1, 2, 4, 8, 11, 16, 17, 19, 22, 34, 38, 44, 68, 76, 88, 136, 152, 176, 187, 209, 272, 304, 323, 367, 374, 418, 646, 734, 748, 836, 1292, 1468, 1496, 1672, 2584, 2936, 2992, 3344, 3553, 4037, 5168, 5872, 6239, 6973, 7106, 8074, 12478, 13946, 14212, 16148, 24956, 27892, 28424, 32296, 49912, 55784, 56848, 64592, 68629, 76703, 99824, 111568, 118541, 137258, 153406, 237082, 274516, 306812, 474164, 549032, 613624, 948328, 1098064, 1227248, 1303951, 1896656, 2607902, 5215804, 10431608, 20863216]

約数ペア:

[(1, 20863216), (2, 10431608), (4, 5215804), (8, 2607902), (11, 1896656), (16, 1303951), (17, 1227248), (19, 1098064), (22, 948328), (34, 613624), (38, 549032), (44, 474164), (68, 306812), (76, 274516), (88, 237082), (136, 153406), (152, 137258), (176, 118541), (187, 111568), (209, 99824), (272, 76703), (304, 68629), (323, 64592), (367, 56848), (374, 55784), (418, 49912), (646, 32296), (734, 28424), (748, 27892), (836, 24956), (1292, 16148), (1468, 14212), (1496, 13946), (1672, 12478), (2584, 8074), (2936, 7106), (2992, 6973), (3344, 6239), (3553, 5872), (4037, 5168)]