21693516

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{563}}^1$

素因数の和:615

約数の個数: 72

約数和(自身を含む): 57798720

約数和(自身を除く): 36105204

約数列:

[1, 2, 3, 4, 6, 12, 13, 19, 26, 38, 39, 52, 57, 76, 78, 114, 156, 169, 228, 247, 338, 494, 507, 563, 676, 741, 988, 1014, 1126, 1482, 1689, 2028, 2252, 2964, 3211, 3378, 6422, 6756, 7319, 9633, 10697, 12844, 14638, 19266, 21394, 21957, 29276, 32091, 38532, 42788, 43914, 64182, 87828, 95147, 128364, 139061, 190294, 278122, 285441, 380588, 417183, 556244, 570882, 834366, 1141764, 1668732, 1807793, 3615586, 5423379, 7231172, 10846758, 21693516]

約数ペア:

[(1, 21693516), (2, 10846758), (3, 7231172), (4, 5423379), (6, 3615586), (12, 1807793), (13, 1668732), (19, 1141764), (26, 834366), (38, 570882), (39, 556244), (52, 417183), (57, 380588), (76, 285441), (78, 278122), (114, 190294), (156, 139061), (169, 128364), (228, 95147), (247, 87828), (338, 64182), (494, 43914), (507, 42788), (563, 38532), (676, 32091), (741, 29276), (988, 21957), (1014, 21394), (1126, 19266), (1482, 14638), (1689, 12844), (2028, 10697), (2252, 9633), (2964, 7319), (3211, 6756), (3378, 6422)]