18990546

素因数分解:

$2^1\times 3^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{653}}^1$

素因数の和:826

約数の個数: 32

約数和(自身を含む): 39365568

約数和(自身を除く): 20375022

約数列:

[1, 2, 3, 6, 37, 74, 111, 131, 222, 262, 393, 653, 786, 1306, 1959, 3918, 4847, 9694, 14541, 24161, 29082, 48322, 72483, 85543, 144966, 171086, 256629, 513258, 3165091, 6330182, 9495273, 18990546]

約数ペア:

[(1, 18990546), (2, 9495273), (3, 6330182), (6, 3165091), (37, 513258), (74, 256629), (111, 171086), (131, 144966), (222, 85543), (262, 72483), (393, 48322), (653, 29082), (786, 24161), (1306, 14541), (1959, 9694), (3918, 4847)]