1280400

素因数分解:

$2^4\times 3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{97}}^1$

素因数の和:129

約数の個数: 120

約数和(自身を含む): 4520544

約数和(自身を除く): 3240144

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 25, 30, 33, 40, 44, 48, 50, 55, 60, 66, 75, 80, 88, 97, 100, 110, 120, 132, 150, 165, 176, 194, 200, 220, 240, 264, 275, 291, 300, 330, 388, 400, 440, 485, 528, 550, 582, 600, 660, 776, 825, 880, 970, 1067, 1100, 1164, 1200, 1320, 1455, 1552, 1650, 1940, 2134, 2200, 2328, 2425, 2640, 2910, 3201, 3300, 3880, 4268, 4400, 4656, 4850, 5335, 5820, 6402, 6600, 7275, 7760, 8536, 9700, 10670, 11640, 12804, 13200, 14550, 16005, 17072, 19400, 21340, 23280, 25608, 26675, 29100, 32010, 38800, 42680, 51216, 53350, 58200, 64020, 80025, 85360, 106700, 116400, 128040, 160050, 213400, 256080, 320100, 426800, 640200, 1280400]

約数ペア:

[(1, 1280400), (2, 640200), (3, 426800), (4, 320100), (5, 256080), (6, 213400), (8, 160050), (10, 128040), (11, 116400), (12, 106700), (15, 85360), (16, 80025), (20, 64020), (22, 58200), (24, 53350), (25, 51216), (30, 42680), (33, 38800), (40, 32010), (44, 29100), (48, 26675), (50, 25608), (55, 23280), (60, 21340), (66, 19400), (75, 17072), (80, 16005), (88, 14550), (97, 13200), (100, 12804), (110, 11640), (120, 10670), (132, 9700), (150, 8536), (165, 7760), (176, 7275), (194, 6600), (200, 6402), (220, 5820), (240, 5335), (264, 4850), (275, 4656), (291, 4400), (300, 4268), (330, 3880), (388, 3300), (400, 3201), (440, 2910), (485, 2640), (528, 2425), (550, 2328), (582, 2200), (600, 2134), (660, 1940), (776, 1650), (825, 1552), (880, 1455), (970, 1320), (1067, 1200), (1100, 1164)]