20413448

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{421}}^1$

素因数の和:486

約数の個数: 64

約数和(自身を含む): 45576000

約数和(自身を除く): 25162552

約数列:

[1, 2, 4, 8, 11, 19, 22, 29, 38, 44, 58, 76, 88, 116, 152, 209, 232, 319, 418, 421, 551, 638, 836, 842, 1102, 1276, 1672, 1684, 2204, 2552, 3368, 4408, 4631, 6061, 7999, 9262, 12122, 12209, 15998, 18524, 24244, 24418, 31996, 37048, 48488, 48836, 63992, 87989, 97672, 134299, 175978, 231971, 268598, 351956, 463942, 537196, 703912, 927884, 1074392, 1855768, 2551681, 5103362, 10206724, 20413448]

約数ペア:

[(1, 20413448), (2, 10206724), (4, 5103362), (8, 2551681), (11, 1855768), (19, 1074392), (22, 927884), (29, 703912), (38, 537196), (44, 463942), (58, 351956), (76, 268598), (88, 231971), (116, 175978), (152, 134299), (209, 97672), (232, 87989), (319, 63992), (418, 48836), (421, 48488), (551, 37048), (638, 31996), (836, 24418), (842, 24244), (1102, 18524), (1276, 15998), (1672, 12209), (1684, 12122), (2204, 9262), (2552, 7999), (3368, 6061), (4408, 4631)]