20184591640

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{401}}^1\times {\mathrm{937}}^1$

素因数の和:1445

約数の個数: 128

約数和(自身を含む): 48869049600

約数和(自身を除く): 28684457960

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 79, 85, 136, 158, 170, 316, 340, 395, 401, 632, 680, 790, 802, 937, 1343, 1580, 1604, 1874, 2005, 2686, 3160, 3208, 3748, 4010, 4685, 5372, 6715, 6817, 7496, 8020, 9370, 10744, 13430, 13634, 15929, 16040, 18740, 26860, 27268, 31679, 31858, 34085, 37480, 53720, 54536, 63358, 63716, 68170, 74023, 79645, 126716, 127432, 136340, 148046, 158395, 159290, 253432, 272680, 296092, 316790, 318580, 370115, 375737, 538543, 592184, 633580, 637160, 740230, 751474, 1077086, 1258391, 1267160, 1480460, 1502948, 1878685, 2154172, 2516782, 2692715, 2960920, 3005896, 3757370, 4308344, 5033564, 5385430, 6291955, 6387529, 7514740, 10067128, 10770860, 12583910, 12775058, 15029480, 21541720, 25167820, 25550116, 29683223, 31937645, 50335640, 51100232, 59366446, 63875290, 118732892, 127750580, 148416115, 237465784, 255501160, 296832230, 504614791, 593664460, 1009229582, 1187328920, 2018459164, 2523073955, 4036918328, 5046147910, 10092295820, 20184591640]

約数ペア:

[(1, 20184591640), (2, 10092295820), (4, 5046147910), (5, 4036918328), (8, 2523073955), (10, 2018459164), (17, 1187328920), (20, 1009229582), (34, 593664460), (40, 504614791), (68, 296832230), (79, 255501160), (85, 237465784), (136, 148416115), (158, 127750580), (170, 118732892), (316, 63875290), (340, 59366446), (395, 51100232), (401, 50335640), (632, 31937645), (680, 29683223), (790, 25550116), (802, 25167820), (937, 21541720), (1343, 15029480), (1580, 12775058), (1604, 12583910), (1874, 10770860), (2005, 10067128), (2686, 7514740), (3160, 6387529), (3208, 6291955), (3748, 5385430), (4010, 5033564), (4685, 4308344), (5372, 3757370), (6715, 3005896), (6817, 2960920), (7496, 2692715), (8020, 2516782), (9370, 2154172), (10744, 1878685), (13430, 1502948), (13634, 1480460), (15929, 1267160), (16040, 1258391), (18740, 1077086), (26860, 751474), (27268, 740230), (31679, 637160), (31858, 633580), (34085, 592184), (37480, 538543), (53720, 375737), (54536, 370115), (63358, 318580), (63716, 316790), (68170, 296092), (74023, 272680), (79645, 253432), (126716, 159290), (127432, 158395), (136340, 148046)]