221821820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{11329}}^1$

素因数の和:11438

約数の個数: 48

約数和(自身を含む): 513928800

約数和(自身を除く): 292106980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 890, 979, 1780, 1958, 3916, 4895, 9790, 11329, 19580, 22658, 45316, 56645, 113290, 124619, 226580, 249238, 498476, 623095, 1008281, 1246190, 2016562, 2492380, 4033124, 5041405, 10082810, 11091091, 20165620, 22182182, 44364364, 55455455, 110910910, 221821820]

約数ペア:

[(1, 221821820), (2, 110910910), (4, 55455455), (5, 44364364), (10, 22182182), (11, 20165620), (20, 11091091), (22, 10082810), (44, 5041405), (55, 4033124), (89, 2492380), (110, 2016562), (178, 1246190), (220, 1008281), (356, 623095), (445, 498476), (890, 249238), (979, 226580), (1780, 124619), (1958, 113290), (3916, 56645), (4895, 45316), (9790, 22658), (11329, 19580)]