20158749980

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{1481}}^1\times {\mathrm{9323}}^1$

素因数の和:10886

約数の個数: 48

約数和(自身を含む): 42946866144

約数和(自身を除く): 22788116164

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 1481, 2962, 5924, 7405, 9323, 14810, 18646, 29620, 37292, 46615, 93230, 108113, 186460, 216226, 432452, 540565, 680579, 1081130, 1361158, 2162260, 2722316, 3402895, 6805790, 13611580, 13807363, 27614726, 55229452, 69036815, 138073630, 276147260, 1007937499, 2015874998, 4031749996, 5039687495, 10079374990, 20158749980]

約数ペア:

[(1, 20158749980), (2, 10079374990), (4, 5039687495), (5, 4031749996), (10, 2015874998), (20, 1007937499), (73, 276147260), (146, 138073630), (292, 69036815), (365, 55229452), (730, 27614726), (1460, 13807363), (1481, 13611580), (2962, 6805790), (5924, 3402895), (7405, 2722316), (9323, 2162260), (14810, 1361158), (18646, 1081130), (29620, 680579), (37292, 540565), (46615, 432452), (93230, 216226), (108113, 186460)]