21640696

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^2$

素因数の和:129

約数の個数: 96

約数和(自身を含む): 54518400

約数和(自身を除く): 32877704

約数列:

[1, 2, 4, 7, 8, 11, 14, 19, 22, 28, 38, 43, 44, 56, 76, 77, 86, 88, 133, 152, 154, 172, 209, 266, 301, 308, 344, 418, 473, 532, 602, 616, 817, 836, 946, 1064, 1204, 1463, 1634, 1672, 1849, 1892, 2408, 2926, 3268, 3311, 3698, 3784, 5719, 5852, 6536, 6622, 7396, 8987, 11438, 11704, 12943, 13244, 14792, 17974, 20339, 22876, 25886, 26488, 35131, 35948, 40678, 45752, 51772, 62909, 70262, 71896, 81356, 103544, 125818, 140524, 142373, 162712, 245917, 251636, 281048, 284746, 386441, 491834, 503272, 569492, 772882, 983668, 1138984, 1545764, 1967336, 2705087, 3091528, 5410174, 10820348, 21640696]

約数ペア:

[(1, 21640696), (2, 10820348), (4, 5410174), (7, 3091528), (8, 2705087), (11, 1967336), (14, 1545764), (19, 1138984), (22, 983668), (28, 772882), (38, 569492), (43, 503272), (44, 491834), (56, 386441), (76, 284746), (77, 281048), (86, 251636), (88, 245917), (133, 162712), (152, 142373), (154, 140524), (172, 125818), (209, 103544), (266, 81356), (301, 71896), (308, 70262), (344, 62909), (418, 51772), (473, 45752), (532, 40678), (602, 35948), (616, 35131), (817, 26488), (836, 25886), (946, 22876), (1064, 20339), (1204, 17974), (1463, 14792), (1634, 13244), (1672, 12943), (1849, 11704), (1892, 11438), (2408, 8987), (2926, 7396), (3268, 6622), (3311, 6536), (3698, 5852), (3784, 5719)]