21198620163

素因数分解:

$3^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{151}}^1\times {\mathrm{52639}}^1$

素因数の和:52927

約数の個数: 32

約数和(自身を含む): 32773242880

約数和(自身を除く): 11574622717

約数列:

[1, 3, 7, 21, 127, 151, 381, 453, 889, 1057, 2667, 3171, 19177, 52639, 57531, 134239, 157917, 368473, 402717, 1105419, 6685153, 7948489, 20055459, 23845467, 46796071, 55639423, 140388213, 166918269, 1009458103, 3028374309, 7066206721, 21198620163]

約数ペア:

[(1, 21198620163), (3, 7066206721), (7, 3028374309), (21, 1009458103), (127, 166918269), (151, 140388213), (381, 55639423), (453, 46796071), (889, 23845467), (1057, 20055459), (2667, 7948489), (3171, 6685153), (19177, 1105419), (52639, 402717), (57531, 368473), (134239, 157917)]