21685638

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{6781}}^1$

素因数の和:6840

約数の個数: 32

約数和(自身を含む): 47853792

約数和(自身を除く): 26168154

約数列:

[1, 2, 3, 6, 13, 26, 39, 41, 78, 82, 123, 246, 533, 1066, 1599, 3198, 6781, 13562, 20343, 40686, 88153, 176306, 264459, 278021, 528918, 556042, 834063, 1668126, 3614273, 7228546, 10842819, 21685638]

約数ペア:

[(1, 21685638), (2, 10842819), (3, 7228546), (6, 3614273), (13, 1668126), (26, 834063), (39, 556042), (41, 528918), (78, 278021), (82, 264459), (123, 176306), (246, 88153), (533, 40686), (1066, 20343), (1599, 13562), (3198, 6781)]