201721526

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1\times {\mathrm{263}}^1$

素因数の和:524

約数の個数: 32

約数和(自身を含む): 319334400

約数和(自身を除く): 117612874

約数列:

[1, 2, 31, 62, 89, 139, 178, 263, 278, 526, 2759, 4309, 5518, 8153, 8618, 12371, 16306, 23407, 24742, 36557, 46814, 73114, 383501, 725617, 767002, 1133267, 1451234, 2266534, 3253573, 6507146, 100860763, 201721526]

約数ペア:

[(1, 201721526), (2, 100860763), (31, 6507146), (62, 3253573), (89, 2266534), (139, 1451234), (178, 1133267), (263, 767002), (278, 725617), (526, 383501), (2759, 73114), (4309, 46814), (5518, 36557), (8153, 24742), (8618, 23407), (12371, 16306)]