19015220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1913}}^1$

素因数の和:2000

約数の個数: 48

約数和(自身を含む): 46303488

約数和(自身を除く): 27288268

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1913, 1988, 2485, 3826, 4970, 7652, 9565, 9940, 13391, 19130, 26782, 38260, 53564, 66955, 133910, 135823, 267820, 271646, 543292, 679115, 950761, 1358230, 1901522, 2716460, 3803044, 4753805, 9507610, 19015220]

約数ペア:

[(1, 19015220), (2, 9507610), (4, 4753805), (5, 3803044), (7, 2716460), (10, 1901522), (14, 1358230), (20, 950761), (28, 679115), (35, 543292), (70, 271646), (71, 267820), (140, 135823), (142, 133910), (284, 66955), (355, 53564), (497, 38260), (710, 26782), (994, 19130), (1420, 13391), (1913, 9940), (1988, 9565), (2485, 7652), (3826, 4970)]