128422400

素因数分解:

$2^9\times 5^2\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:234

約数の個数: 120

約数和(自身を含む): 324741120

約数和(自身を除く): 196318720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 79, 80, 100, 127, 128, 158, 160, 200, 254, 256, 316, 320, 395, 400, 508, 512, 632, 635, 640, 790, 800, 1016, 1264, 1270, 1280, 1580, 1600, 1975, 2032, 2528, 2540, 2560, 3160, 3175, 3200, 3950, 4064, 5056, 5080, 6320, 6350, 6400, 7900, 8128, 10033, 10112, 10160, 12640, 12700, 12800, 15800, 16256, 20066, 20224, 20320, 25280, 25400, 31600, 32512, 40132, 40448, 40640, 50165, 50560, 50800, 63200, 65024, 80264, 81280, 100330, 101120, 101600, 126400, 160528, 162560, 200660, 202240, 203200, 250825, 252800, 321056, 325120, 401320, 406400, 501650, 505600, 642112, 802640, 812800, 1003300, 1011200, 1284224, 1605280, 1625600, 2006600, 2568448, 3210560, 4013200, 5136896, 6421120, 8026400, 12842240, 16052800, 25684480, 32105600, 64211200, 128422400]

約数ペア:

[(1, 128422400), (2, 64211200), (4, 32105600), (5, 25684480), (8, 16052800), (10, 12842240), (16, 8026400), (20, 6421120), (25, 5136896), (32, 4013200), (40, 3210560), (50, 2568448), (64, 2006600), (79, 1625600), (80, 1605280), (100, 1284224), (127, 1011200), (128, 1003300), (158, 812800), (160, 802640), (200, 642112), (254, 505600), (256, 501650), (316, 406400), (320, 401320), (395, 325120), (400, 321056), (508, 252800), (512, 250825), (632, 203200), (635, 202240), (640, 200660), (790, 162560), (800, 160528), (1016, 126400), (1264, 101600), (1270, 101120), (1280, 100330), (1580, 81280), (1600, 80264), (1975, 65024), (2032, 63200), (2528, 50800), (2540, 50560), (2560, 50165), (3160, 40640), (3175, 40448), (3200, 40132), (3950, 32512), (4064, 31600), (5056, 25400), (5080, 25280), (6320, 20320), (6350, 20224), (6400, 20066), (7900, 16256), (8128, 15800), (10033, 12800), (10112, 12700), (10160, 12640)]