20989836

素因数分解:

$2^2\times 3^2\times 7^2\times {\mathrm{73}}^1\times {\mathrm{163}}^1$

素因数の和:260

約数の個数: 108

約数和(自身を含む): 62949432

約数和(自身を除く): 41959596

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 49, 63, 73, 84, 98, 126, 146, 147, 163, 196, 219, 252, 292, 294, 326, 438, 441, 489, 511, 588, 652, 657, 876, 882, 978, 1022, 1141, 1314, 1467, 1533, 1764, 1956, 2044, 2282, 2628, 2934, 3066, 3423, 3577, 4564, 4599, 5868, 6132, 6846, 7154, 7987, 9198, 10269, 10731, 11899, 13692, 14308, 15974, 18396, 20538, 21462, 23798, 23961, 31948, 32193, 35697, 41076, 42924, 47596, 47922, 64386, 71394, 71883, 83293, 95844, 107091, 128772, 142788, 143766, 166586, 214182, 249879, 287532, 333172, 428364, 499758, 583051, 749637, 999516, 1166102, 1499274, 1749153, 2332204, 2998548, 3498306, 5247459, 6996612, 10494918, 20989836]

約数ペア:

[(1, 20989836), (2, 10494918), (3, 6996612), (4, 5247459), (6, 3498306), (7, 2998548), (9, 2332204), (12, 1749153), (14, 1499274), (18, 1166102), (21, 999516), (28, 749637), (36, 583051), (42, 499758), (49, 428364), (63, 333172), (73, 287532), (84, 249879), (98, 214182), (126, 166586), (146, 143766), (147, 142788), (163, 128772), (196, 107091), (219, 95844), (252, 83293), (292, 71883), (294, 71394), (326, 64386), (438, 47922), (441, 47596), (489, 42924), (511, 41076), (588, 35697), (652, 32193), (657, 31948), (876, 23961), (882, 23798), (978, 21462), (1022, 20538), (1141, 18396), (1314, 15974), (1467, 14308), (1533, 13692), (1764, 11899), (1956, 10731), (2044, 10269), (2282, 9198), (2628, 7987), (2934, 7154), (3066, 6846), (3423, 6132), (3577, 5868), (4564, 4599)]