72020925

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{991}}^1$

素因数の和:1043

約数の個数: 72

約数和(自身を含む): 143919360

約数和(自身を除く): 71898435

約数列:

[1, 3, 5, 9, 15, 17, 19, 25, 45, 51, 57, 75, 85, 95, 153, 171, 225, 255, 285, 323, 425, 475, 765, 855, 969, 991, 1275, 1425, 1615, 2907, 2973, 3825, 4275, 4845, 4955, 8075, 8919, 14535, 14865, 16847, 18829, 24225, 24775, 44595, 50541, 56487, 72675, 74325, 84235, 94145, 151623, 169461, 222975, 252705, 282435, 320093, 421175, 470725, 758115, 847305, 960279, 1263525, 1412175, 1600465, 2880837, 3790575, 4236525, 4801395, 8002325, 14404185, 24006975, 72020925]

約数ペア:

[(1, 72020925), (3, 24006975), (5, 14404185), (9, 8002325), (15, 4801395), (17, 4236525), (19, 3790575), (25, 2880837), (45, 1600465), (51, 1412175), (57, 1263525), (75, 960279), (85, 847305), (95, 758115), (153, 470725), (171, 421175), (225, 320093), (255, 282435), (285, 252705), (323, 222975), (425, 169461), (475, 151623), (765, 94145), (855, 84235), (969, 74325), (991, 72675), (1275, 56487), (1425, 50541), (1615, 44595), (2907, 24775), (2973, 24225), (3825, 18829), (4275, 16847), (4845, 14865), (4955, 14535), (8075, 8919)]