20528027975

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{474911}}^1$

素因数の和:474960

約数の個数: 48

約数和(自身を含む): 32977889280

約数和(自身を除く): 12449861305

約数列:

[1, 5, 7, 13, 19, 25, 35, 65, 91, 95, 133, 175, 247, 325, 455, 475, 665, 1235, 1729, 2275, 3325, 6175, 8645, 43225, 474911, 2374555, 3324377, 6173843, 9023309, 11872775, 16621885, 30869215, 43216901, 45116545, 63163163, 83109425, 117303017, 154346075, 216084505, 225582725, 315815815, 586515085, 821121119, 1080422525, 1579079075, 2932575425, 4105605595, 20528027975]

約数ペア:

[(1, 20528027975), (5, 4105605595), (7, 2932575425), (13, 1579079075), (19, 1080422525), (25, 821121119), (35, 586515085), (65, 315815815), (91, 225582725), (95, 216084505), (133, 154346075), (175, 117303017), (247, 83109425), (325, 63163163), (455, 45116545), (475, 43216901), (665, 30869215), (1235, 16621885), (1729, 11872775), (2275, 9023309), (3325, 6173843), (6175, 3324377), (8645, 2374555), (43225, 474911)]