18229960

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:227

約数の個数: 96

約数和(自身を含む): 48755520

約数和(自身を除く): 30525560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 71, 98, 131, 140, 142, 196, 245, 262, 280, 284, 355, 392, 490, 497, 524, 568, 655, 710, 917, 980, 994, 1048, 1310, 1420, 1834, 1960, 1988, 2485, 2620, 2840, 3479, 3668, 3976, 4585, 4970, 5240, 6419, 6958, 7336, 9170, 9301, 9940, 12838, 13916, 17395, 18340, 18602, 19880, 25676, 27832, 32095, 34790, 36680, 37204, 46505, 51352, 64190, 65107, 69580, 74408, 93010, 128380, 130214, 139160, 186020, 256760, 260428, 325535, 372040, 455749, 520856, 651070, 911498, 1302140, 1822996, 2278745, 2604280, 3645992, 4557490, 9114980, 18229960]

約数ペア:

[(1, 18229960), (2, 9114980), (4, 4557490), (5, 3645992), (7, 2604280), (8, 2278745), (10, 1822996), (14, 1302140), (20, 911498), (28, 651070), (35, 520856), (40, 455749), (49, 372040), (56, 325535), (70, 260428), (71, 256760), (98, 186020), (131, 139160), (140, 130214), (142, 128380), (196, 93010), (245, 74408), (262, 69580), (280, 65107), (284, 64190), (355, 51352), (392, 46505), (490, 37204), (497, 36680), (524, 34790), (568, 32095), (655, 27832), (710, 25676), (917, 19880), (980, 18602), (994, 18340), (1048, 17395), (1310, 13916), (1420, 12838), (1834, 9940), (1960, 9301), (1988, 9170), (2485, 7336), (2620, 6958), (2840, 6419), (3479, 5240), (3668, 4970), (3976, 4585)]