21315800

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{9689}}^1$

素因数の和:9716

約数の個数: 48

約数和(自身を含む): 54070200

約数和(自身を除く): 32754400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 200, 220, 275, 440, 550, 1100, 2200, 9689, 19378, 38756, 48445, 77512, 96890, 106579, 193780, 213158, 242225, 387560, 426316, 484450, 532895, 852632, 968900, 1065790, 1937800, 2131580, 2664475, 4263160, 5328950, 10657900, 21315800]

約数ペア:

[(1, 21315800), (2, 10657900), (4, 5328950), (5, 4263160), (8, 2664475), (10, 2131580), (11, 1937800), (20, 1065790), (22, 968900), (25, 852632), (40, 532895), (44, 484450), (50, 426316), (55, 387560), (88, 242225), (100, 213158), (110, 193780), (200, 106579), (220, 96890), (275, 77512), (440, 48445), (550, 38756), (1100, 19378), (2200, 9689)]