19378030

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{557}}^1$

素因数の和:649

約数の個数: 48

約数和(自身を含む): 41220576

約数和(自身を除く): 21842546

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 71, 98, 142, 245, 355, 490, 497, 557, 710, 994, 1114, 2485, 2785, 3479, 3899, 4970, 5570, 6958, 7798, 17395, 19495, 27293, 34790, 38990, 39547, 54586, 79094, 136465, 197735, 272930, 276829, 395470, 553658, 1384145, 1937803, 2768290, 3875606, 9689015, 19378030]

約数ペア:

[(1, 19378030), (2, 9689015), (5, 3875606), (7, 2768290), (10, 1937803), (14, 1384145), (35, 553658), (49, 395470), (70, 276829), (71, 272930), (98, 197735), (142, 136465), (245, 79094), (355, 54586), (490, 39547), (497, 38990), (557, 34790), (710, 27293), (994, 19495), (1114, 17395), (2485, 7798), (2785, 6958), (3479, 5570), (3899, 4970)]