18028220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{983}}^1$

素因数の和:1130

約数の個数: 48

約数和(自身を含む): 43642368

約数和(自身を除く): 25614148

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 131, 140, 262, 524, 655, 917, 983, 1310, 1834, 1966, 2620, 3668, 3932, 4585, 4915, 6881, 9170, 9830, 13762, 18340, 19660, 27524, 34405, 68810, 128773, 137620, 257546, 515092, 643865, 901411, 1287730, 1802822, 2575460, 3605644, 4507055, 9014110, 18028220]

約数ペア:

[(1, 18028220), (2, 9014110), (4, 4507055), (5, 3605644), (7, 2575460), (10, 1802822), (14, 1287730), (20, 901411), (28, 643865), (35, 515092), (70, 257546), (131, 137620), (140, 128773), (262, 68810), (524, 34405), (655, 27524), (917, 19660), (983, 18340), (1310, 13762), (1834, 9830), (1966, 9170), (2620, 6881), (3668, 4915), (3932, 4585)]