20974744980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^3\times {\mathrm{339727}}^1$

素因数の和:339763

約数の個数: 144

約数和(自身を含む): 74196595200

約数和(自身を除く): 53221850220

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 343, 420, 441, 490, 588, 630, 686, 735, 882, 980, 1029, 1260, 1372, 1470, 1715, 1764, 2058, 2205, 2940, 3087, 3430, 4116, 4410, 5145, 6174, 6860, 8820, 10290, 12348, 15435, 20580, 30870, 61740, 339727, 679454, 1019181, 1358908, 1698635, 2038362, 2378089, 3057543, 3397270, 4076724, 4756178, 5095905, 6115086, 6794540, 7134267, 9512356, 10191810, 11890445, 12230172, 14268534, 15287715, 16646623, 20383620, 21402801, 23780890, 28537068, 30575430, 33293246, 35671335, 42805602, 47561780, 49939869, 61150860, 66586492, 71342670, 83233115, 85611204, 99879738, 107014005, 116526361, 142685340, 149819607, 166466230, 199759476, 214028010, 233052722, 249699345, 299639214, 332932460, 349579083, 428056020, 466105444, 499398690, 582631805, 599278428, 699158166, 749098035, 998797380, 1048737249, 1165263610, 1398316332, 1498196070, 1747895415, 2097474498, 2330527220, 2996392140, 3495790830, 4194948996, 5243686245, 6991581660, 10487372490, 20974744980]

約数ペア:

[(1, 20974744980), (2, 10487372490), (3, 6991581660), (4, 5243686245), (5, 4194948996), (6, 3495790830), (7, 2996392140), (9, 2330527220), (10, 2097474498), (12, 1747895415), (14, 1498196070), (15, 1398316332), (18, 1165263610), (20, 1048737249), (21, 998797380), (28, 749098035), (30, 699158166), (35, 599278428), (36, 582631805), (42, 499398690), (45, 466105444), (49, 428056020), (60, 349579083), (63, 332932460), (70, 299639214), (84, 249699345), (90, 233052722), (98, 214028010), (105, 199759476), (126, 166466230), (140, 149819607), (147, 142685340), (180, 116526361), (196, 107014005), (210, 99879738), (245, 85611204), (252, 83233115), (294, 71342670), (315, 66586492), (343, 61150860), (420, 49939869), (441, 47561780), (490, 42805602), (588, 35671335), (630, 33293246), (686, 30575430), (735, 28537068), (882, 23780890), (980, 21402801), (1029, 20383620), (1260, 16646623), (1372, 15287715), (1470, 14268534), (1715, 12230172), (1764, 11890445), (2058, 10191810), (2205, 9512356), (2940, 7134267), (3087, 6794540), (3430, 6115086), (4116, 5095905), (4410, 4756178), (5145, 4076724), (6174, 3397270), (6860, 3057543), (8820, 2378089), (10290, 2038362), (12348, 1698635), (15435, 1358908), (20580, 1019181), (30870, 679454), (61740, 339727)]