20961952

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1$

素因数の和:182

約数の個数: 96

約数和(自身を含む): 49641984

約数和(自身を除く): 28680032

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 31, 32, 34, 44, 62, 68, 88, 113, 124, 136, 176, 187, 226, 248, 272, 341, 352, 374, 452, 496, 527, 544, 682, 748, 904, 992, 1054, 1243, 1364, 1496, 1808, 1921, 2108, 2486, 2728, 2992, 3503, 3616, 3842, 4216, 4972, 5456, 5797, 5984, 7006, 7684, 8432, 9944, 10912, 11594, 14012, 15368, 16864, 19888, 21131, 23188, 28024, 30736, 38533, 39776, 42262, 46376, 56048, 59551, 61472, 77066, 84524, 92752, 112096, 119102, 154132, 169048, 185504, 238204, 308264, 338096, 476408, 616528, 655061, 676192, 952816, 1233056, 1310122, 1905632, 2620244, 5240488, 10480976, 20961952]

約数ペア:

[(1, 20961952), (2, 10480976), (4, 5240488), (8, 2620244), (11, 1905632), (16, 1310122), (17, 1233056), (22, 952816), (31, 676192), (32, 655061), (34, 616528), (44, 476408), (62, 338096), (68, 308264), (88, 238204), (113, 185504), (124, 169048), (136, 154132), (176, 119102), (187, 112096), (226, 92752), (248, 84524), (272, 77066), (341, 61472), (352, 59551), (374, 56048), (452, 46376), (496, 42262), (527, 39776), (544, 38533), (682, 30736), (748, 28024), (904, 23188), (992, 21131), (1054, 19888), (1243, 16864), (1364, 15368), (1496, 14012), (1808, 11594), (1921, 10912), (2108, 9944), (2486, 8432), (2728, 7684), (2992, 7006), (3503, 5984), (3616, 5797), (3842, 5456), (4216, 4972)]