21248260

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{1637}}^1$

素因数の和:1716

約数の個数: 48

約数和(自身を含む): 49533120

約数和(自身を除く): 28284860

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 59, 110, 118, 220, 236, 295, 590, 649, 1180, 1298, 1637, 2596, 3245, 3274, 6490, 6548, 8185, 12980, 16370, 18007, 32740, 36014, 72028, 90035, 96583, 180070, 193166, 360140, 386332, 482915, 965830, 1062413, 1931660, 2124826, 4249652, 5312065, 10624130, 21248260]

約数ペア:

[(1, 21248260), (2, 10624130), (4, 5312065), (5, 4249652), (10, 2124826), (11, 1931660), (20, 1062413), (22, 965830), (44, 482915), (55, 386332), (59, 360140), (110, 193166), (118, 180070), (220, 96583), (236, 90035), (295, 72028), (590, 36014), (649, 32740), (1180, 18007), (1298, 16370), (1637, 12980), (2596, 8185), (3245, 6548), (3274, 6490)]