21244751660

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{137}}^1\times {\mathrm{139}}^1\times {\mathrm{461}}^1$

素因数の和:768

約数の個数: 144

約数和(自身を含む): 49859742240

約数和(自身を除く): 28614990580

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 137, 139, 220, 242, 274, 278, 461, 484, 548, 556, 605, 685, 695, 922, 1210, 1370, 1390, 1507, 1529, 1844, 2305, 2420, 2740, 2780, 3014, 3058, 4610, 5071, 6028, 6116, 7535, 7645, 9220, 10142, 15070, 15290, 16577, 16819, 19043, 20284, 25355, 30140, 30580, 33154, 33638, 38086, 50710, 55781, 63157, 64079, 66308, 67276, 76172, 82885, 84095, 95215, 101420, 111562, 126314, 128158, 165770, 168190, 190430, 209473, 223124, 252628, 256316, 278905, 315785, 320395, 331540, 336380, 380860, 418946, 557810, 631570, 640790, 694727, 704869, 837892, 1047365, 1115620, 1263140, 1281580, 1389454, 1409738, 2094730, 2304203, 2778908, 2819476, 3473635, 3524345, 4189460, 4608406, 6947270, 7048690, 7641997, 7753559, 8778823, 9216812, 11521015, 13894540, 14097380, 15283994, 15507118, 17557646, 23042030, 30567988, 31014236, 35115292, 38209985, 38767795, 43894115, 46084060, 76419970, 77535590, 87788230, 96567053, 152839940, 155071180, 175576460, 193134106, 386268212, 482835265, 965670530, 1062237583, 1931341060, 2124475166, 4248950332, 5311187915, 10622375830, 21244751660]

約数ペア:

[(1, 21244751660), (2, 10622375830), (4, 5311187915), (5, 4248950332), (10, 2124475166), (11, 1931341060), (20, 1062237583), (22, 965670530), (44, 482835265), (55, 386268212), (110, 193134106), (121, 175576460), (137, 155071180), (139, 152839940), (220, 96567053), (242, 87788230), (274, 77535590), (278, 76419970), (461, 46084060), (484, 43894115), (548, 38767795), (556, 38209985), (605, 35115292), (685, 31014236), (695, 30567988), (922, 23042030), (1210, 17557646), (1370, 15507118), (1390, 15283994), (1507, 14097380), (1529, 13894540), (1844, 11521015), (2305, 9216812), (2420, 8778823), (2740, 7753559), (2780, 7641997), (3014, 7048690), (3058, 6947270), (4610, 4608406), (5071, 4189460), (6028, 3524345), (6116, 3473635), (7535, 2819476), (7645, 2778908), (9220, 2304203), (10142, 2094730), (15070, 1409738), (15290, 1389454), (16577, 1281580), (16819, 1263140), (19043, 1115620), (20284, 1047365), (25355, 837892), (30140, 704869), (30580, 694727), (33154, 640790), (33638, 631570), (38086, 557810), (50710, 418946), (55781, 380860), (63157, 336380), (64079, 331540), (66308, 320395), (67276, 315785), (76172, 278905), (82885, 256316), (84095, 252628), (95215, 223124), (101420, 209473), (111562, 190430), (126314, 168190), (128158, 165770)]