21010320

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:230

約数の個数: 160

約数和(自身を含む): 73923840

約数和(自身を除く): 52913520

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 71, 72, 80, 90, 108, 120, 135, 137, 142, 144, 180, 213, 216, 240, 270, 274, 284, 355, 360, 411, 426, 432, 540, 548, 568, 639, 685, 710, 720, 822, 852, 1065, 1080, 1096, 1136, 1233, 1278, 1370, 1420, 1644, 1704, 1917, 2055, 2130, 2160, 2192, 2466, 2556, 2740, 2840, 3195, 3288, 3408, 3699, 3834, 4110, 4260, 4932, 5112, 5480, 5680, 6165, 6390, 6576, 7398, 7668, 8220, 8520, 9585, 9727, 9864, 10224, 10960, 12330, 12780, 14796, 15336, 16440, 17040, 18495, 19170, 19454, 19728, 24660, 25560, 29181, 29592, 30672, 32880, 36990, 38340, 38908, 48635, 49320, 51120, 58362, 59184, 73980, 76680, 77816, 87543, 97270, 98640, 116724, 145905, 147960, 153360, 155632, 175086, 194540, 233448, 262629, 291810, 295920, 350172, 389080, 437715, 466896, 525258, 583620, 700344, 778160, 875430, 1050516, 1167240, 1313145, 1400688, 1750860, 2101032, 2334480, 2626290, 3501720, 4202064, 5252580, 7003440, 10505160, 21010320]

約数ペア:

[(1, 21010320), (2, 10505160), (3, 7003440), (4, 5252580), (5, 4202064), (6, 3501720), (8, 2626290), (9, 2334480), (10, 2101032), (12, 1750860), (15, 1400688), (16, 1313145), (18, 1167240), (20, 1050516), (24, 875430), (27, 778160), (30, 700344), (36, 583620), (40, 525258), (45, 466896), (48, 437715), (54, 389080), (60, 350172), (71, 295920), (72, 291810), (80, 262629), (90, 233448), (108, 194540), (120, 175086), (135, 155632), (137, 153360), (142, 147960), (144, 145905), (180, 116724), (213, 98640), (216, 97270), (240, 87543), (270, 77816), (274, 76680), (284, 73980), (355, 59184), (360, 58362), (411, 51120), (426, 49320), (432, 48635), (540, 38908), (548, 38340), (568, 36990), (639, 32880), (685, 30672), (710, 29592), (720, 29181), (822, 25560), (852, 24660), (1065, 19728), (1080, 19454), (1096, 19170), (1136, 18495), (1233, 17040), (1278, 16440), (1370, 15336), (1420, 14796), (1644, 12780), (1704, 12330), (1917, 10960), (2055, 10224), (2130, 9864), (2160, 9727), (2192, 9585), (2466, 8520), (2556, 8220), (2740, 7668), (2840, 7398), (3195, 6576), (3288, 6390), (3408, 6165), (3699, 5680), (3834, 5480), (4110, 5112), (4260, 4932)]