20498175

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{233}}^1$

素因数の和:289

約数の個数: 72

約数和(自身を含む): 40738464

約数和(自身を除く): 20240289

約数列:

[1, 3, 5, 9, 15, 17, 23, 25, 45, 51, 69, 75, 85, 115, 153, 207, 225, 233, 255, 345, 391, 425, 575, 699, 765, 1035, 1165, 1173, 1275, 1725, 1955, 2097, 3495, 3519, 3825, 3961, 5175, 5359, 5825, 5865, 9775, 10485, 11883, 16077, 17475, 17595, 19805, 26795, 29325, 35649, 48231, 52425, 59415, 80385, 87975, 91103, 99025, 133975, 178245, 241155, 273309, 297075, 401925, 455515, 819927, 891225, 1205775, 1366545, 2277575, 4099635, 6832725, 20498175]

約数ペア:

[(1, 20498175), (3, 6832725), (5, 4099635), (9, 2277575), (15, 1366545), (17, 1205775), (23, 891225), (25, 819927), (45, 455515), (51, 401925), (69, 297075), (75, 273309), (85, 241155), (115, 178245), (153, 133975), (207, 99025), (225, 91103), (233, 87975), (255, 80385), (345, 59415), (391, 52425), (425, 48231), (575, 35649), (699, 29325), (765, 26795), (1035, 19805), (1165, 17595), (1173, 17475), (1275, 16077), (1725, 11883), (1955, 10485), (2097, 9775), (3495, 5865), (3519, 5825), (3825, 5359), (3961, 5175)]