18248780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{761}}^1$

素因数の和:890

約数の個数: 48

約数和(自身を含む): 42245280

約数和(自身を除く): 23996500

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 109, 110, 218, 220, 436, 545, 761, 1090, 1199, 1522, 2180, 2398, 3044, 3805, 4796, 5995, 7610, 8371, 11990, 15220, 16742, 23980, 33484, 41855, 82949, 83710, 165898, 167420, 331796, 414745, 829490, 912439, 1658980, 1824878, 3649756, 4562195, 9124390, 18248780]

約数ペア:

[(1, 18248780), (2, 9124390), (4, 4562195), (5, 3649756), (10, 1824878), (11, 1658980), (20, 912439), (22, 829490), (44, 414745), (55, 331796), (109, 167420), (110, 165898), (218, 83710), (220, 82949), (436, 41855), (545, 33484), (761, 23980), (1090, 16742), (1199, 15220), (1522, 11990), (2180, 8371), (2398, 7610), (3044, 5995), (3805, 4796)]