28825587

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 49533120

約数和(自身を除く): 20707533

約数列:

[1, 3, 7, 9, 21, 53, 63, 89, 97, 159, 267, 291, 371, 477, 623, 679, 801, 873, 1113, 1869, 2037, 3339, 4717, 5141, 5607, 6111, 8633, 14151, 15423, 25899, 33019, 35987, 42453, 46269, 60431, 77697, 99057, 107961, 181293, 297171, 323883, 457549, 543879, 1372647, 3202843, 4117941, 9608529, 28825587]

約数ペア:

[(1, 28825587), (3, 9608529), (7, 4117941), (9, 3202843), (21, 1372647), (53, 543879), (63, 457549), (89, 323883), (97, 297171), (159, 181293), (267, 107961), (291, 99057), (371, 77697), (477, 60431), (623, 46269), (679, 42453), (801, 35987), (873, 33019), (1113, 25899), (1869, 15423), (2037, 14151), (3339, 8633), (4717, 6111), (5141, 5607)]