21244455

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{157}}^1$

素因数の和:296

約数の個数: 48

約数和(自身を含む): 38648064

約数和(自身を除く): 17403609

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 97, 155, 157, 279, 291, 465, 471, 485, 785, 873, 1395, 1413, 1455, 2355, 3007, 4365, 4867, 7065, 9021, 14601, 15035, 15229, 24335, 27063, 43803, 45105, 45687, 73005, 76145, 135315, 137061, 219015, 228435, 472099, 685305, 1416297, 2360495, 4248891, 7081485, 21244455]

約数ペア:

[(1, 21244455), (3, 7081485), (5, 4248891), (9, 2360495), (15, 1416297), (31, 685305), (45, 472099), (93, 228435), (97, 219015), (155, 137061), (157, 135315), (279, 76145), (291, 73005), (465, 45687), (471, 45105), (485, 43803), (785, 27063), (873, 24335), (1395, 15229), (1413, 15035), (1455, 14601), (2355, 9021), (3007, 7065), (4365, 4867)]