18021640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{4951}}^1$

素因数の和:4982

約数の個数: 64

約数和(自身を含む): 49916160

約数和(自身を除く): 31894520

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 4951, 9902, 19804, 24755, 34657, 39608, 49510, 64363, 69314, 99020, 128726, 138628, 173285, 198040, 257452, 277256, 321815, 346570, 450541, 514904, 643630, 693140, 901082, 1287260, 1386280, 1802164, 2252705, 2574520, 3604328, 4505410, 9010820, 18021640]

約数ペア:

[(1, 18021640), (2, 9010820), (4, 4505410), (5, 3604328), (7, 2574520), (8, 2252705), (10, 1802164), (13, 1386280), (14, 1287260), (20, 901082), (26, 693140), (28, 643630), (35, 514904), (40, 450541), (52, 346570), (56, 321815), (65, 277256), (70, 257452), (91, 198040), (104, 173285), (130, 138628), (140, 128726), (182, 99020), (260, 69314), (280, 64363), (364, 49510), (455, 39608), (520, 34657), (728, 24755), (910, 19804), (1820, 9902), (3640, 4951)]