18642008

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{571}}^1$

素因数の和:648

約数の個数: 64

約数和(自身を含む): 44478720

約数和(自身を除く): 25836712

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 53, 56, 77, 88, 106, 154, 212, 308, 371, 424, 571, 583, 616, 742, 1142, 1166, 1484, 2284, 2332, 2968, 3997, 4081, 4568, 4664, 6281, 7994, 8162, 12562, 15988, 16324, 25124, 30263, 31976, 32648, 43967, 50248, 60526, 87934, 121052, 175868, 211841, 242104, 332893, 351736, 423682, 665786, 847364, 1331572, 1694728, 2330251, 2663144, 4660502, 9321004, 18642008]

約数ペア:

[(1, 18642008), (2, 9321004), (4, 4660502), (7, 2663144), (8, 2330251), (11, 1694728), (14, 1331572), (22, 847364), (28, 665786), (44, 423682), (53, 351736), (56, 332893), (77, 242104), (88, 211841), (106, 175868), (154, 121052), (212, 87934), (308, 60526), (371, 50248), (424, 43967), (571, 32648), (583, 31976), (616, 30263), (742, 25124), (1142, 16324), (1166, 15988), (1484, 12562), (2284, 8162), (2332, 7994), (2968, 6281), (3997, 4664), (4081, 4568)]