19673955

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{191}}^1$

素因数の和:321

約数の個数: 64

約数和(自身を含む): 40550400

約数和(自身を除く): 20876445

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 109, 135, 189, 191, 315, 327, 545, 573, 763, 945, 955, 981, 1337, 1635, 1719, 2289, 2865, 2943, 3815, 4011, 4905, 5157, 6685, 6867, 8595, 11445, 12033, 14715, 20055, 20601, 20819, 25785, 34335, 36099, 60165, 62457, 103005, 104095, 145733, 180495, 187371, 312285, 437199, 562113, 728665, 936855, 1311597, 2185995, 2810565, 3934791, 6557985, 19673955]

約数ペア:

[(1, 19673955), (3, 6557985), (5, 3934791), (7, 2810565), (9, 2185995), (15, 1311597), (21, 936855), (27, 728665), (35, 562113), (45, 437199), (63, 312285), (105, 187371), (109, 180495), (135, 145733), (189, 104095), (191, 103005), (315, 62457), (327, 60165), (545, 36099), (573, 34335), (763, 25785), (945, 20819), (955, 20601), (981, 20055), (1337, 14715), (1635, 12033), (1719, 11445), (2289, 8595), (2865, 6867), (2943, 6685), (3815, 5157), (4011, 4905)]