21128422

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{547}}^1$

素因数の和:676

約数の個数: 32

約数和(自身を含む): 37877760

約数和(自身を除く): 16749338

約数列:

[1, 2, 7, 14, 31, 62, 89, 178, 217, 434, 547, 623, 1094, 1246, 2759, 3829, 5518, 7658, 16957, 19313, 33914, 38626, 48683, 97366, 118699, 237398, 340781, 681562, 1509173, 3018346, 10564211, 21128422]

約数ペア:

[(1, 21128422), (2, 10564211), (7, 3018346), (14, 1509173), (31, 681562), (62, 340781), (89, 237398), (178, 118699), (217, 97366), (434, 48683), (547, 38626), (623, 33914), (1094, 19313), (1246, 16957), (2759, 7658), (3829, 5518)]