28579740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{9721}}^1$

素因数の和:9747

約数の個数: 72

約数和(自身を含む): 93097872

約数和(自身を除く): 64518132

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 9721, 19442, 29163, 38884, 48605, 58326, 68047, 97210, 116652, 136094, 145815, 194420, 204141, 272188, 291630, 340235, 408282, 476329, 583260, 680470, 816564, 952658, 1020705, 1360940, 1428987, 1905316, 2041410, 2381645, 2857974, 4082820, 4763290, 5715948, 7144935, 9526580, 14289870, 28579740]

約数ペア:

[(1, 28579740), (2, 14289870), (3, 9526580), (4, 7144935), (5, 5715948), (6, 4763290), (7, 4082820), (10, 2857974), (12, 2381645), (14, 2041410), (15, 1905316), (20, 1428987), (21, 1360940), (28, 1020705), (30, 952658), (35, 816564), (42, 680470), (49, 583260), (60, 476329), (70, 408282), (84, 340235), (98, 291630), (105, 272188), (140, 204141), (147, 194420), (196, 145815), (210, 136094), (245, 116652), (294, 97210), (420, 68047), (490, 58326), (588, 48605), (735, 38884), (980, 29163), (1470, 19442), (2940, 9721)]