21001848

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{839}}^1$

素因数の和:1004

約数の個数: 64

約数和(自身を含む): 60480000

約数和(自身を除く): 39478152

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 149, 168, 298, 447, 596, 839, 894, 1043, 1192, 1678, 1788, 2086, 2517, 3129, 3356, 3576, 4172, 5034, 5873, 6258, 6712, 8344, 10068, 11746, 12516, 17619, 20136, 23492, 25032, 35238, 46984, 70476, 125011, 140952, 250022, 375033, 500044, 750066, 875077, 1000088, 1500132, 1750154, 2625231, 3000264, 3500308, 5250462, 7000616, 10500924, 21001848]

約数ペア:

[(1, 21001848), (2, 10500924), (3, 7000616), (4, 5250462), (6, 3500308), (7, 3000264), (8, 2625231), (12, 1750154), (14, 1500132), (21, 1000088), (24, 875077), (28, 750066), (42, 500044), (56, 375033), (84, 250022), (149, 140952), (168, 125011), (298, 70476), (447, 46984), (596, 35238), (839, 25032), (894, 23492), (1043, 20136), (1192, 17619), (1678, 12516), (1788, 11746), (2086, 10068), (2517, 8344), (3129, 6712), (3356, 6258), (3576, 5873), (4172, 5034)]