21860358

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1$

素因数の和:221

約数の個数: 64

約数和(自身を含む): 49351680

約数和(自身を除く): 27491322

約数列:

[1, 2, 3, 6, 13, 26, 39, 47, 67, 78, 89, 94, 134, 141, 178, 201, 267, 282, 402, 534, 611, 871, 1157, 1222, 1742, 1833, 2314, 2613, 3149, 3471, 3666, 4183, 5226, 5963, 6298, 6942, 8366, 9447, 11926, 12549, 17889, 18894, 25098, 35778, 40937, 54379, 77519, 81874, 108758, 122811, 155038, 163137, 232557, 245622, 280261, 326274, 465114, 560522, 840783, 1681566, 3643393, 7286786, 10930179, 21860358]

約数ペア:

[(1, 21860358), (2, 10930179), (3, 7286786), (6, 3643393), (13, 1681566), (26, 840783), (39, 560522), (47, 465114), (67, 326274), (78, 280261), (89, 245622), (94, 232557), (134, 163137), (141, 155038), (178, 122811), (201, 108758), (267, 81874), (282, 77519), (402, 54379), (534, 40937), (611, 35778), (871, 25098), (1157, 18894), (1222, 17889), (1742, 12549), (1833, 11926), (2314, 9447), (2613, 8366), (3149, 6942), (3471, 6298), (3666, 5963), (4183, 5226)]