21971040

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{503}}^1$

素因数の和:541

約数の個数: 192

約数和(自身を含む): 85349376

約数和(自身を除く): 63378336

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 20, 21, 24, 26, 28, 30, 32, 35, 39, 40, 42, 48, 52, 56, 60, 65, 70, 78, 80, 84, 91, 96, 104, 105, 112, 120, 130, 140, 156, 160, 168, 182, 195, 208, 210, 224, 240, 260, 273, 280, 312, 336, 364, 390, 416, 420, 455, 480, 503, 520, 546, 560, 624, 672, 728, 780, 840, 910, 1006, 1040, 1092, 1120, 1248, 1365, 1456, 1509, 1560, 1680, 1820, 2012, 2080, 2184, 2515, 2730, 2912, 3018, 3120, 3360, 3521, 3640, 4024, 4368, 5030, 5460, 6036, 6240, 6539, 7042, 7280, 7545, 8048, 8736, 10060, 10563, 10920, 12072, 13078, 14084, 14560, 15090, 16096, 17605, 19617, 20120, 21126, 21840, 24144, 26156, 28168, 30180, 32695, 35210, 39234, 40240, 42252, 43680, 45773, 48288, 52312, 52815, 56336, 60360, 65390, 70420, 78468, 80480, 84504, 91546, 98085, 104624, 105630, 112672, 120720, 130780, 137319, 140840, 156936, 169008, 183092, 196170, 209248, 211260, 228865, 241440, 261560, 274638, 281680, 313872, 338016, 366184, 392340, 422520, 457730, 523120, 549276, 563360, 627744, 686595, 732368, 784680, 845040, 915460, 1046240, 1098552, 1373190, 1464736, 1569360, 1690080, 1830920, 2197104, 2746380, 3138720, 3661840, 4394208, 5492760, 7323680, 10985520, 21971040]

約数ペア:

[(1, 21971040), (2, 10985520), (3, 7323680), (4, 5492760), (5, 4394208), (6, 3661840), (7, 3138720), (8, 2746380), (10, 2197104), (12, 1830920), (13, 1690080), (14, 1569360), (15, 1464736), (16, 1373190), (20, 1098552), (21, 1046240), (24, 915460), (26, 845040), (28, 784680), (30, 732368), (32, 686595), (35, 627744), (39, 563360), (40, 549276), (42, 523120), (48, 457730), (52, 422520), (56, 392340), (60, 366184), (65, 338016), (70, 313872), (78, 281680), (80, 274638), (84, 261560), (91, 241440), (96, 228865), (104, 211260), (105, 209248), (112, 196170), (120, 183092), (130, 169008), (140, 156936), (156, 140840), (160, 137319), (168, 130780), (182, 120720), (195, 112672), (208, 105630), (210, 104624), (224, 98085), (240, 91546), (260, 84504), (273, 80480), (280, 78468), (312, 70420), (336, 65390), (364, 60360), (390, 56336), (416, 52815), (420, 52312), (455, 48288), (480, 45773), (503, 43680), (520, 42252), (546, 40240), (560, 39234), (624, 35210), (672, 32695), (728, 30180), (780, 28168), (840, 26156), (910, 24144), (1006, 21840), (1040, 21126), (1092, 20120), (1120, 19617), (1248, 17605), (1365, 16096), (1456, 15090), (1509, 14560), (1560, 14084), (1680, 13078), (1820, 12072), (2012, 10920), (2080, 10563), (2184, 10060), (2515, 8736), (2730, 8048), (2912, 7545), (3018, 7280), (3120, 7042), (3360, 6539), (3521, 6240), (3640, 6036), (4024, 5460), (4368, 5030)]