21121578

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{409}}^1$

素因数の和:587

約数の個数: 48

約数和(自身を含む): 48609600

約数和(自身を除く): 27488022

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 57, 114, 151, 171, 302, 342, 409, 453, 818, 906, 1227, 1359, 2454, 2718, 2869, 3681, 5738, 7362, 7771, 8607, 15542, 17214, 23313, 25821, 46626, 51642, 61759, 69939, 123518, 139878, 185277, 370554, 555831, 1111662, 1173421, 2346842, 3520263, 7040526, 10560789, 21121578]

約数ペア:

[(1, 21121578), (2, 10560789), (3, 7040526), (6, 3520263), (9, 2346842), (18, 1173421), (19, 1111662), (38, 555831), (57, 370554), (114, 185277), (151, 139878), (171, 123518), (302, 69939), (342, 61759), (409, 51642), (453, 46626), (818, 25821), (906, 23313), (1227, 17214), (1359, 15542), (2454, 8607), (2718, 7771), (2869, 7362), (3681, 5738)]