1781819520

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71387}}^1$

素因数の和:71422

約数の個数: 128

約数和(自身を含む): 6116523840

約数和(自身を除く): 4334704320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 120, 128, 130, 156, 160, 192, 195, 208, 240, 260, 312, 320, 384, 390, 416, 480, 520, 624, 640, 780, 832, 960, 1040, 1248, 1560, 1664, 1920, 2080, 2496, 3120, 4160, 4992, 6240, 8320, 12480, 24960, 71387, 142774, 214161, 285548, 356935, 428322, 571096, 713870, 856644, 928031, 1070805, 1142192, 1427740, 1713288, 1856062, 2141610, 2284384, 2784093, 2855480, 3426576, 3712124, 4283220, 4568768, 4640155, 5568186, 5710960, 6853152, 7424248, 8566440, 9137536, 9280310, 11136372, 11421920, 13706304, 13920465, 14848496, 17132880, 18560620, 22272744, 22843840, 27412608, 27840930, 29696992, 34265760, 37121240, 44545488, 45687680, 55681860, 59393984, 68531520, 74242480, 89090976, 111363720, 118787968, 137063040, 148484960, 178181952, 222727440, 296969920, 356363904, 445454880, 593939840, 890909760, 1781819520]

約数ペア:

[(1, 1781819520), (2, 890909760), (3, 593939840), (4, 445454880), (5, 356363904), (6, 296969920), (8, 222727440), (10, 178181952), (12, 148484960), (13, 137063040), (15, 118787968), (16, 111363720), (20, 89090976), (24, 74242480), (26, 68531520), (30, 59393984), (32, 55681860), (39, 45687680), (40, 44545488), (48, 37121240), (52, 34265760), (60, 29696992), (64, 27840930), (65, 27412608), (78, 22843840), (80, 22272744), (96, 18560620), (104, 17132880), (120, 14848496), (128, 13920465), (130, 13706304), (156, 11421920), (160, 11136372), (192, 9280310), (195, 9137536), (208, 8566440), (240, 7424248), (260, 6853152), (312, 5710960), (320, 5568186), (384, 4640155), (390, 4568768), (416, 4283220), (480, 3712124), (520, 3426576), (624, 2855480), (640, 2784093), (780, 2284384), (832, 2141610), (960, 1856062), (1040, 1713288), (1248, 1427740), (1560, 1142192), (1664, 1070805), (1920, 928031), (2080, 856644), (2496, 713870), (3120, 571096), (4160, 428322), (4992, 356935), (6240, 285548), (8320, 214161), (12480, 142774), (24960, 71387)]