28480816

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{631}}^1$

素因数の和:690

約数の個数: 80

約数和(自身を含む): 70217728

約数和(自身を除く): 41736912

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 31, 52, 56, 62, 91, 104, 112, 124, 182, 208, 217, 248, 364, 403, 434, 496, 631, 728, 806, 868, 1262, 1456, 1612, 1736, 2524, 2821, 3224, 3472, 4417, 5048, 5642, 6448, 8203, 8834, 10096, 11284, 16406, 17668, 19561, 22568, 32812, 35336, 39122, 45136, 57421, 65624, 70672, 78244, 114842, 131248, 136927, 156488, 229684, 254293, 273854, 312976, 459368, 508586, 547708, 918736, 1017172, 1095416, 1780051, 2034344, 2190832, 3560102, 4068688, 7120204, 14240408, 28480816]

約数ペア:

[(1, 28480816), (2, 14240408), (4, 7120204), (7, 4068688), (8, 3560102), (13, 2190832), (14, 2034344), (16, 1780051), (26, 1095416), (28, 1017172), (31, 918736), (52, 547708), (56, 508586), (62, 459368), (91, 312976), (104, 273854), (112, 254293), (124, 229684), (182, 156488), (208, 136927), (217, 131248), (248, 114842), (364, 78244), (403, 70672), (434, 65624), (496, 57421), (631, 45136), (728, 39122), (806, 35336), (868, 32812), (1262, 22568), (1456, 19561), (1612, 17668), (1736, 16406), (2524, 11284), (2821, 10096), (3224, 8834), (3472, 8203), (4417, 6448), (5048, 5642)]