20647529375

素因数分解:

$5^4\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{109}}^1\times {\mathrm{467}}^1$

素因数の和:666

約数の個数: 80

約数和(自身を含む): 28948233600

約数和(自身を除く): 8300704225

約数列:

[1, 5, 11, 25, 55, 59, 109, 125, 275, 295, 467, 545, 625, 649, 1199, 1375, 1475, 2335, 2725, 3245, 5137, 5995, 6431, 6875, 7375, 11675, 13625, 16225, 25685, 27553, 29975, 32155, 36875, 50903, 58375, 68125, 70741, 81125, 128425, 137765, 149875, 160775, 254515, 291875, 303083, 353705, 405625, 559933, 642125, 688825, 749375, 803875, 1272575, 1515415, 1768525, 2799665, 3003277, 3210625, 3444125, 4019375, 6362875, 7577075, 8842625, 13998325, 15016385, 17220625, 31814375, 33036047, 37885375, 44213125, 69991625, 75081925, 165180235, 189426875, 349958125, 375409625, 825901175, 1877048125, 4129505875, 20647529375]

約数ペア:

[(1, 20647529375), (5, 4129505875), (11, 1877048125), (25, 825901175), (55, 375409625), (59, 349958125), (109, 189426875), (125, 165180235), (275, 75081925), (295, 69991625), (467, 44213125), (545, 37885375), (625, 33036047), (649, 31814375), (1199, 17220625), (1375, 15016385), (1475, 13998325), (2335, 8842625), (2725, 7577075), (3245, 6362875), (5137, 4019375), (5995, 3444125), (6431, 3210625), (6875, 3003277), (7375, 2799665), (11675, 1768525), (13625, 1515415), (16225, 1272575), (25685, 803875), (27553, 749375), (29975, 688825), (32155, 642125), (36875, 559933), (50903, 405625), (58375, 353705), (68125, 303083), (70741, 291875), (81125, 254515), (128425, 160775), (137765, 149875)]