20123845920

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{450803}}^1$

素因数の和:450855

約数の個数: 144

約数和(自身を含む): 70888027392

約数和(自身を除く): 50764181472

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 31, 32, 36, 40, 45, 48, 60, 62, 72, 80, 90, 93, 96, 120, 124, 144, 155, 160, 180, 186, 240, 248, 279, 288, 310, 360, 372, 465, 480, 496, 558, 620, 720, 744, 930, 992, 1116, 1240, 1395, 1440, 1488, 1860, 2232, 2480, 2790, 2976, 3720, 4464, 4960, 5580, 7440, 8928, 11160, 14880, 22320, 44640, 450803, 901606, 1352409, 1803212, 2254015, 2704818, 3606424, 4057227, 4508030, 5409636, 6762045, 7212848, 8114454, 9016060, 10819272, 13524090, 13974893, 14425696, 16228908, 18032120, 20286135, 21638544, 27048180, 27949786, 32457816, 36064240, 40572270, 41924679, 43277088, 54096360, 55899572, 64915632, 69874465, 72128480, 81144540, 83849358, 108192720, 111799144, 125774037, 129831264, 139748930, 162289080, 167698716, 209623395, 216385440, 223598288, 251548074, 279497860, 324578160, 335397432, 419246790, 447196576, 503096148, 558995720, 628870185, 649156320, 670794864, 838493580, 1006192296, 1117991440, 1257740370, 1341589728, 1676987160, 2012384592, 2235982880, 2515480740, 3353974320, 4024769184, 5030961480, 6707948640, 10061922960, 20123845920]

約数ペア:

[(1, 20123845920), (2, 10061922960), (3, 6707948640), (4, 5030961480), (5, 4024769184), (6, 3353974320), (8, 2515480740), (9, 2235982880), (10, 2012384592), (12, 1676987160), (15, 1341589728), (16, 1257740370), (18, 1117991440), (20, 1006192296), (24, 838493580), (30, 670794864), (31, 649156320), (32, 628870185), (36, 558995720), (40, 503096148), (45, 447196576), (48, 419246790), (60, 335397432), (62, 324578160), (72, 279497860), (80, 251548074), (90, 223598288), (93, 216385440), (96, 209623395), (120, 167698716), (124, 162289080), (144, 139748930), (155, 129831264), (160, 125774037), (180, 111799144), (186, 108192720), (240, 83849358), (248, 81144540), (279, 72128480), (288, 69874465), (310, 64915632), (360, 55899572), (372, 54096360), (465, 43277088), (480, 41924679), (496, 40572270), (558, 36064240), (620, 32457816), (720, 27949786), (744, 27048180), (930, 21638544), (992, 20286135), (1116, 18032120), (1240, 16228908), (1395, 14425696), (1440, 13974893), (1488, 13524090), (1860, 10819272), (2232, 9016060), (2480, 8114454), (2790, 7212848), (2976, 6762045), (3720, 5409636), (4464, 4508030), (4960, 4057227), (5580, 3606424), (7440, 2704818), (8928, 2254015), (11160, 1803212), (14880, 1352409), (22320, 901606), (44640, 450803)]