18721422

素因数分解:

$2^1\times 3^3\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{257}}^1$

素因数の和:358

約数の個数: 64

約数和(自身を含む): 44582400

約数和(自身を除く): 25860978

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 38, 54, 57, 71, 114, 142, 171, 213, 257, 342, 426, 513, 514, 639, 771, 1026, 1278, 1349, 1542, 1917, 2313, 2698, 3834, 4047, 4626, 4883, 6939, 8094, 9766, 12141, 13878, 14649, 18247, 24282, 29298, 36423, 36494, 43947, 54741, 72846, 87894, 109482, 131841, 164223, 263682, 328446, 346693, 492669, 693386, 985338, 1040079, 2080158, 3120237, 6240474, 9360711, 18721422]

約数ペア:

[(1, 18721422), (2, 9360711), (3, 6240474), (6, 3120237), (9, 2080158), (18, 1040079), (19, 985338), (27, 693386), (38, 492669), (54, 346693), (57, 328446), (71, 263682), (114, 164223), (142, 131841), (171, 109482), (213, 87894), (257, 72846), (342, 54741), (426, 43947), (513, 36494), (514, 36423), (639, 29298), (771, 24282), (1026, 18247), (1278, 14649), (1349, 13878), (1542, 12141), (1917, 9766), (2313, 8094), (2698, 6939), (3834, 4883), (4047, 4626)]