21868785

素因数分解:

$3^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{439}}^1$

素因数の和:500

約数の個数: 48

約数和(自身を含む): 40360320

約数和(自身を除く): 18491535

約数列:

[1, 3, 5, 9, 15, 27, 41, 45, 81, 123, 135, 205, 243, 369, 405, 439, 615, 1107, 1215, 1317, 1845, 2195, 3321, 3951, 5535, 6585, 9963, 11853, 16605, 17999, 19755, 35559, 49815, 53997, 59265, 89995, 106677, 161991, 177795, 269985, 485973, 533385, 809955, 1457919, 2429865, 4373757, 7289595, 21868785]

約数ペア:

[(1, 21868785), (3, 7289595), (5, 4373757), (9, 2429865), (15, 1457919), (27, 809955), (41, 533385), (45, 485973), (81, 269985), (123, 177795), (135, 161991), (205, 106677), (243, 89995), (369, 59265), (405, 53997), (439, 49815), (615, 35559), (1107, 19755), (1215, 17999), (1317, 16605), (1845, 11853), (2195, 9963), (3321, 6585), (3951, 5535)]