19821256

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1433}}^1$

素因数の和:1478

約数の個数: 64

約数和(自身を含む): 48182400

約数和(自身を除く): 28361144

約数列:

[1, 2, 4, 7, 8, 13, 14, 19, 26, 28, 38, 52, 56, 76, 91, 104, 133, 152, 182, 247, 266, 364, 494, 532, 728, 988, 1064, 1433, 1729, 1976, 2866, 3458, 5732, 6916, 10031, 11464, 13832, 18629, 20062, 27227, 37258, 40124, 54454, 74516, 80248, 108908, 130403, 149032, 190589, 217816, 260806, 353951, 381178, 521612, 707902, 762356, 1043224, 1415804, 1524712, 2477657, 2831608, 4955314, 9910628, 19821256]

約数ペア:

[(1, 19821256), (2, 9910628), (4, 4955314), (7, 2831608), (8, 2477657), (13, 1524712), (14, 1415804), (19, 1043224), (26, 762356), (28, 707902), (38, 521612), (52, 381178), (56, 353951), (76, 260806), (91, 217816), (104, 190589), (133, 149032), (152, 130403), (182, 108908), (247, 80248), (266, 74516), (364, 54454), (494, 40124), (532, 37258), (728, 27227), (988, 20062), (1064, 18629), (1433, 13832), (1729, 11464), (1976, 10031), (2866, 6916), (3458, 5732)]