51511720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1$

素因数の和:179

約数の個数: 128

約数和(自身を含む): 134265600

約数和(自身を除く): 82753880

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 23, 26, 40, 46, 52, 59, 65, 73, 92, 104, 115, 118, 130, 146, 184, 230, 236, 260, 292, 295, 299, 365, 460, 472, 520, 584, 590, 598, 730, 767, 920, 949, 1180, 1196, 1357, 1460, 1495, 1534, 1679, 1898, 2360, 2392, 2714, 2920, 2990, 3068, 3358, 3796, 3835, 4307, 4745, 5428, 5980, 6136, 6716, 6785, 7592, 7670, 8395, 8614, 9490, 10856, 11960, 13432, 13570, 15340, 16790, 17228, 17641, 18980, 21535, 21827, 27140, 30680, 33580, 34456, 35282, 37960, 43070, 43654, 54280, 55991, 67160, 70564, 86140, 87308, 88205, 99061, 109135, 111982, 141128, 172280, 174616, 176410, 198122, 218270, 223964, 279955, 352820, 396244, 436540, 447928, 495305, 559910, 705640, 792488, 873080, 990610, 1119820, 1287793, 1981220, 2239640, 2575586, 3962440, 5151172, 6438965, 10302344, 12877930, 25755860, 51511720]

約数ペア:

[(1, 51511720), (2, 25755860), (4, 12877930), (5, 10302344), (8, 6438965), (10, 5151172), (13, 3962440), (20, 2575586), (23, 2239640), (26, 1981220), (40, 1287793), (46, 1119820), (52, 990610), (59, 873080), (65, 792488), (73, 705640), (92, 559910), (104, 495305), (115, 447928), (118, 436540), (130, 396244), (146, 352820), (184, 279955), (230, 223964), (236, 218270), (260, 198122), (292, 176410), (295, 174616), (299, 172280), (365, 141128), (460, 111982), (472, 109135), (520, 99061), (584, 88205), (590, 87308), (598, 86140), (730, 70564), (767, 67160), (920, 55991), (949, 54280), (1180, 43654), (1196, 43070), (1357, 37960), (1460, 35282), (1495, 34456), (1534, 33580), (1679, 30680), (1898, 27140), (2360, 21827), (2392, 21535), (2714, 18980), (2920, 17641), (2990, 17228), (3068, 16790), (3358, 15340), (3796, 13570), (3835, 13432), (4307, 11960), (4745, 10856), (5428, 9490), (5980, 8614), (6136, 8395), (6716, 7670), (6785, 7592)]