654433920

素因数分解:

$2^7\times 3^2\times 5^1\times 7^1\times {\mathrm{16231}}^1$

素因数の和:16263

約数の個数: 192

約数和(自身を含む): 2582835840

約数和(自身を除く): 1928401920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 128, 140, 144, 160, 168, 180, 192, 210, 224, 240, 252, 280, 288, 315, 320, 336, 360, 384, 420, 448, 480, 504, 560, 576, 630, 640, 672, 720, 840, 896, 960, 1008, 1120, 1152, 1260, 1344, 1440, 1680, 1920, 2016, 2240, 2520, 2688, 2880, 3360, 4032, 4480, 5040, 5760, 6720, 8064, 10080, 13440, 16231, 20160, 32462, 40320, 48693, 64924, 81155, 97386, 113617, 129848, 146079, 162310, 194772, 227234, 243465, 259696, 292158, 324620, 340851, 389544, 454468, 486930, 519392, 568085, 584316, 649240, 681702, 730395, 779088, 908936, 973860, 1022553, 1038784, 1136170, 1168632, 1298480, 1363404, 1460790, 1558176, 1704255, 1817872, 1947720, 2045106, 2077568, 2272340, 2337264, 2596960, 2726808, 2921580, 3116352, 3408510, 3635744, 3895440, 4090212, 4544680, 4674528, 5112765, 5193920, 5453616, 5843160, 6232704, 6817020, 7271488, 7790880, 8180424, 9089360, 9349056, 10225530, 10387840, 10907232, 11686320, 13634040, 14542976, 15581760, 16360848, 18178720, 18698112, 20451060, 21814464, 23372640, 27268080, 31163520, 32721696, 36357440, 40902120, 43628928, 46745280, 54536160, 65443392, 72714880, 81804240, 93490560, 109072320, 130886784, 163608480, 218144640, 327216960, 654433920]

約数ペア:

[(1, 654433920), (2, 327216960), (3, 218144640), (4, 163608480), (5, 130886784), (6, 109072320), (7, 93490560), (8, 81804240), (9, 72714880), (10, 65443392), (12, 54536160), (14, 46745280), (15, 43628928), (16, 40902120), (18, 36357440), (20, 32721696), (21, 31163520), (24, 27268080), (28, 23372640), (30, 21814464), (32, 20451060), (35, 18698112), (36, 18178720), (40, 16360848), (42, 15581760), (45, 14542976), (48, 13634040), (56, 11686320), (60, 10907232), (63, 10387840), (64, 10225530), (70, 9349056), (72, 9089360), (80, 8180424), (84, 7790880), (90, 7271488), (96, 6817020), (105, 6232704), (112, 5843160), (120, 5453616), (126, 5193920), (128, 5112765), (140, 4674528), (144, 4544680), (160, 4090212), (168, 3895440), (180, 3635744), (192, 3408510), (210, 3116352), (224, 2921580), (240, 2726808), (252, 2596960), (280, 2337264), (288, 2272340), (315, 2077568), (320, 2045106), (336, 1947720), (360, 1817872), (384, 1704255), (420, 1558176), (448, 1460790), (480, 1363404), (504, 1298480), (560, 1168632), (576, 1136170), (630, 1038784), (640, 1022553), (672, 973860), (720, 908936), (840, 779088), (896, 730395), (960, 681702), (1008, 649240), (1120, 584316), (1152, 568085), (1260, 519392), (1344, 486930), (1440, 454468), (1680, 389544), (1920, 340851), (2016, 324620), (2240, 292158), (2520, 259696), (2688, 243465), (2880, 227234), (3360, 194772), (4032, 162310), (4480, 146079), (5040, 129848), (5760, 113617), (6720, 97386), (8064, 81155), (10080, 64924), (13440, 48693), (16231, 40320), (20160, 32462)]