21426405

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1427}}^1$

素因数の和:1466

約数の個数: 64

約数和(自身を含む): 46061568

約数和(自身を除く): 24635163

約数列:

[1, 3, 5, 7, 11, 13, 15, 21, 33, 35, 39, 55, 65, 77, 91, 105, 143, 165, 195, 231, 273, 385, 429, 455, 715, 1001, 1155, 1365, 1427, 2145, 3003, 4281, 5005, 7135, 9989, 15015, 15697, 18551, 21405, 29967, 47091, 49945, 55653, 78485, 92755, 109879, 129857, 149835, 204061, 235455, 278265, 329637, 389571, 549395, 612183, 649285, 1020305, 1428427, 1648185, 1947855, 3060915, 4285281, 7142135, 21426405]

約数ペア:

[(1, 21426405), (3, 7142135), (5, 4285281), (7, 3060915), (11, 1947855), (13, 1648185), (15, 1428427), (21, 1020305), (33, 649285), (35, 612183), (39, 549395), (55, 389571), (65, 329637), (77, 278265), (91, 235455), (105, 204061), (143, 149835), (165, 129857), (195, 109879), (231, 92755), (273, 78485), (385, 55653), (429, 49945), (455, 47091), (715, 29967), (1001, 21405), (1155, 18551), (1365, 15697), (1427, 15015), (2145, 9989), (3003, 7135), (4281, 5005)]