21535121920

素因数分解:

$2^9\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{8191}}^1$

素因数の和:8306

約数の個数: 160

約数和(自身を含む): 56316395520

約数和(自身を除く): 34781273600

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 79, 80, 104, 128, 130, 158, 160, 208, 256, 260, 316, 320, 395, 416, 512, 520, 632, 640, 790, 832, 1027, 1040, 1264, 1280, 1580, 1664, 2054, 2080, 2528, 2560, 3160, 3328, 4108, 4160, 5056, 5135, 6320, 6656, 8191, 8216, 8320, 10112, 10270, 12640, 16382, 16432, 16640, 20224, 20540, 25280, 32764, 32864, 33280, 40448, 40955, 41080, 50560, 65528, 65728, 81910, 82160, 101120, 106483, 131056, 131456, 163820, 164320, 202240, 212966, 262112, 262912, 327640, 328640, 425932, 524224, 525824, 532415, 647089, 655280, 657280, 851864, 1048448, 1064830, 1294178, 1310560, 1314560, 1703728, 2096896, 2129660, 2588356, 2621120, 2629120, 3235445, 3407456, 4193792, 4259320, 5176712, 5242240, 6470890, 6814912, 8412157, 8518640, 10353424, 10484480, 12941780, 13629824, 16824314, 17037280, 20706848, 20968960, 25883560, 27259648, 33648628, 34074560, 41413696, 42060785, 51767120, 54519296, 67297256, 68149120, 82827392, 84121570, 103534240, 134594512, 136298240, 165654784, 168243140, 207068480, 269189024, 272596480, 331309568, 336486280, 414136960, 538378048, 672972560, 828273920, 1076756096, 1345945120, 1656547840, 2153512192, 2691890240, 4307024384, 5383780480, 10767560960, 21535121920]

約数ペア:

[(1, 21535121920), (2, 10767560960), (4, 5383780480), (5, 4307024384), (8, 2691890240), (10, 2153512192), (13, 1656547840), (16, 1345945120), (20, 1076756096), (26, 828273920), (32, 672972560), (40, 538378048), (52, 414136960), (64, 336486280), (65, 331309568), (79, 272596480), (80, 269189024), (104, 207068480), (128, 168243140), (130, 165654784), (158, 136298240), (160, 134594512), (208, 103534240), (256, 84121570), (260, 82827392), (316, 68149120), (320, 67297256), (395, 54519296), (416, 51767120), (512, 42060785), (520, 41413696), (632, 34074560), (640, 33648628), (790, 27259648), (832, 25883560), (1027, 20968960), (1040, 20706848), (1264, 17037280), (1280, 16824314), (1580, 13629824), (1664, 12941780), (2054, 10484480), (2080, 10353424), (2528, 8518640), (2560, 8412157), (3160, 6814912), (3328, 6470890), (4108, 5242240), (4160, 5176712), (5056, 4259320), (5135, 4193792), (6320, 3407456), (6656, 3235445), (8191, 2629120), (8216, 2621120), (8320, 2588356), (10112, 2129660), (10270, 2096896), (12640, 1703728), (16382, 1314560), (16432, 1310560), (16640, 1294178), (20224, 1064830), (20540, 1048448), (25280, 851864), (32764, 657280), (32864, 655280), (33280, 647089), (40448, 532415), (40955, 525824), (41080, 524224), (50560, 425932), (65528, 328640), (65728, 327640), (81910, 262912), (82160, 262112), (101120, 212966), (106483, 202240), (131056, 164320), (131456, 163820)]