18201820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:239

約数の個数: 96

約数和(自身を含む): 48037248

約数和(自身を除く): 29835428

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 73, 91, 130, 137, 140, 146, 182, 260, 274, 292, 364, 365, 455, 511, 548, 685, 730, 910, 949, 959, 1022, 1370, 1460, 1781, 1820, 1898, 1918, 2044, 2555, 2740, 3562, 3796, 3836, 4745, 4795, 5110, 6643, 7124, 8905, 9490, 9590, 10001, 10220, 12467, 13286, 17810, 18980, 19180, 20002, 24934, 26572, 33215, 35620, 40004, 49868, 50005, 62335, 66430, 70007, 100010, 124670, 130013, 132860, 140014, 200020, 249340, 260026, 280028, 350035, 520052, 650065, 700070, 910091, 1300130, 1400140, 1820182, 2600260, 3640364, 4550455, 9100910, 18201820]

約数ペア:

[(1, 18201820), (2, 9100910), (4, 4550455), (5, 3640364), (7, 2600260), (10, 1820182), (13, 1400140), (14, 1300130), (20, 910091), (26, 700070), (28, 650065), (35, 520052), (52, 350035), (65, 280028), (70, 260026), (73, 249340), (91, 200020), (130, 140014), (137, 132860), (140, 130013), (146, 124670), (182, 100010), (260, 70007), (274, 66430), (292, 62335), (364, 50005), (365, 49868), (455, 40004), (511, 35620), (548, 33215), (685, 26572), (730, 24934), (910, 20002), (949, 19180), (959, 18980), (1022, 17810), (1370, 13286), (1460, 12467), (1781, 10220), (1820, 10001), (1898, 9590), (1918, 9490), (2044, 8905), (2555, 7124), (2740, 6643), (3562, 5110), (3796, 4795), (3836, 4745)]