21711105

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:255

約数の個数: 64

約数和(自身を含む): 42336000

約数和(自身を除く): 20624895

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 89, 117, 135, 139, 195, 267, 351, 417, 445, 585, 695, 801, 1157, 1251, 1335, 1755, 1807, 2085, 2403, 3471, 3753, 4005, 5421, 5785, 6255, 9035, 10413, 12015, 12371, 16263, 17355, 18765, 27105, 31239, 37113, 48789, 52065, 61855, 81315, 111339, 156195, 160823, 185565, 243945, 334017, 482469, 556695, 804115, 1447407, 1670085, 2412345, 4342221, 7237035, 21711105]

約数ペア:

[(1, 21711105), (3, 7237035), (5, 4342221), (9, 2412345), (13, 1670085), (15, 1447407), (27, 804115), (39, 556695), (45, 482469), (65, 334017), (89, 243945), (117, 185565), (135, 160823), (139, 156195), (195, 111339), (267, 81315), (351, 61855), (417, 52065), (445, 48789), (585, 37113), (695, 31239), (801, 27105), (1157, 18765), (1251, 17355), (1335, 16263), (1755, 12371), (1807, 12015), (2085, 10413), (2403, 9035), (3471, 6255), (3753, 5785), (4005, 5421)]