20123040

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{113}}^1$

素因数の和:191

約数の個数: 192

約数和(自身を含む): 74462976

約数和(自身を除く): 54339936

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 53, 56, 60, 70, 80, 84, 96, 105, 106, 112, 113, 120, 140, 159, 160, 168, 210, 212, 224, 226, 240, 265, 280, 318, 336, 339, 371, 420, 424, 452, 480, 530, 560, 565, 636, 672, 678, 742, 791, 795, 840, 848, 904, 1060, 1113, 1120, 1130, 1272, 1356, 1484, 1582, 1590, 1680, 1695, 1696, 1808, 1855, 2120, 2226, 2260, 2373, 2544, 2712, 2968, 3164, 3180, 3360, 3390, 3616, 3710, 3955, 4240, 4452, 4520, 4746, 5088, 5424, 5565, 5936, 5989, 6328, 6360, 6780, 7420, 7910, 8480, 8904, 9040, 9492, 10848, 11130, 11865, 11872, 11978, 12656, 12720, 13560, 14840, 15820, 17808, 17967, 18080, 18984, 22260, 23730, 23956, 25312, 25440, 27120, 29680, 29945, 31640, 35616, 35934, 37968, 41923, 44520, 47460, 47912, 54240, 59360, 59890, 63280, 71868, 75936, 83846, 89040, 89835, 94920, 95824, 119780, 125769, 126560, 143736, 167692, 178080, 179670, 189840, 191648, 209615, 239560, 251538, 287472, 335384, 359340, 379680, 419230, 479120, 503076, 574944, 628845, 670768, 718680, 838460, 958240, 1006152, 1257690, 1341536, 1437360, 1676920, 2012304, 2515380, 2874720, 3353840, 4024608, 5030760, 6707680, 10061520, 20123040]

約数ペア:

[(1, 20123040), (2, 10061520), (3, 6707680), (4, 5030760), (5, 4024608), (6, 3353840), (7, 2874720), (8, 2515380), (10, 2012304), (12, 1676920), (14, 1437360), (15, 1341536), (16, 1257690), (20, 1006152), (21, 958240), (24, 838460), (28, 718680), (30, 670768), (32, 628845), (35, 574944), (40, 503076), (42, 479120), (48, 419230), (53, 379680), (56, 359340), (60, 335384), (70, 287472), (80, 251538), (84, 239560), (96, 209615), (105, 191648), (106, 189840), (112, 179670), (113, 178080), (120, 167692), (140, 143736), (159, 126560), (160, 125769), (168, 119780), (210, 95824), (212, 94920), (224, 89835), (226, 89040), (240, 83846), (265, 75936), (280, 71868), (318, 63280), (336, 59890), (339, 59360), (371, 54240), (420, 47912), (424, 47460), (452, 44520), (480, 41923), (530, 37968), (560, 35934), (565, 35616), (636, 31640), (672, 29945), (678, 29680), (742, 27120), (791, 25440), (795, 25312), (840, 23956), (848, 23730), (904, 22260), (1060, 18984), (1113, 18080), (1120, 17967), (1130, 17808), (1272, 15820), (1356, 14840), (1484, 13560), (1582, 12720), (1590, 12656), (1680, 11978), (1695, 11872), (1696, 11865), (1808, 11130), (1855, 10848), (2120, 9492), (2226, 9040), (2260, 8904), (2373, 8480), (2544, 7910), (2712, 7420), (2968, 6780), (3164, 6360), (3180, 6328), (3360, 5989), (3390, 5936), (3616, 5565), (3710, 5424), (3955, 5088), (4240, 4746), (4452, 4520)]