128421120

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{631}}^1$

素因数の和:708

約数の個数: 144

約数和(自身を含む): 418545792

約数和(自身を除く): 290124672

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 53, 60, 64, 80, 96, 106, 120, 128, 159, 160, 192, 212, 240, 256, 265, 318, 320, 384, 424, 480, 530, 631, 636, 640, 768, 795, 848, 960, 1060, 1262, 1272, 1280, 1590, 1696, 1893, 1920, 2120, 2524, 2544, 3155, 3180, 3392, 3786, 3840, 4240, 5048, 5088, 6310, 6360, 6784, 7572, 8480, 9465, 10096, 10176, 12620, 12720, 13568, 15144, 16960, 18930, 20192, 20352, 25240, 25440, 30288, 33443, 33920, 37860, 40384, 40704, 50480, 50880, 60576, 66886, 67840, 75720, 80768, 100329, 100960, 101760, 121152, 133772, 151440, 161536, 167215, 200658, 201920, 203520, 242304, 267544, 302880, 334430, 401316, 403840, 484608, 501645, 535088, 605760, 668860, 802632, 807680, 1003290, 1070176, 1211520, 1337720, 1605264, 2006580, 2140352, 2423040, 2675440, 3210528, 4013160, 4280704, 5350880, 6421056, 8026320, 8561408, 10701760, 12842112, 16052640, 21403520, 25684224, 32105280, 42807040, 64210560, 128421120]

約数ペア:

[(1, 128421120), (2, 64210560), (3, 42807040), (4, 32105280), (5, 25684224), (6, 21403520), (8, 16052640), (10, 12842112), (12, 10701760), (15, 8561408), (16, 8026320), (20, 6421056), (24, 5350880), (30, 4280704), (32, 4013160), (40, 3210528), (48, 2675440), (53, 2423040), (60, 2140352), (64, 2006580), (80, 1605264), (96, 1337720), (106, 1211520), (120, 1070176), (128, 1003290), (159, 807680), (160, 802632), (192, 668860), (212, 605760), (240, 535088), (256, 501645), (265, 484608), (318, 403840), (320, 401316), (384, 334430), (424, 302880), (480, 267544), (530, 242304), (631, 203520), (636, 201920), (640, 200658), (768, 167215), (795, 161536), (848, 151440), (960, 133772), (1060, 121152), (1262, 101760), (1272, 100960), (1280, 100329), (1590, 80768), (1696, 75720), (1893, 67840), (1920, 66886), (2120, 60576), (2524, 50880), (2544, 50480), (3155, 40704), (3180, 40384), (3392, 37860), (3786, 33920), (3840, 33443), (4240, 30288), (5048, 25440), (5088, 25240), (6310, 20352), (6360, 20192), (6784, 18930), (7572, 16960), (8480, 15144), (9465, 13568), (10096, 12720), (10176, 12620)]