20790624920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{167}}^1\times {\mathrm{7723}}^1$

素因数の和:7945

約数の個数: 128

約数和(自身を含む): 52320522240

約数和(自身を除く): 31529897320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 167, 248, 260, 310, 334, 403, 520, 620, 668, 806, 835, 1240, 1336, 1612, 1670, 2015, 2171, 3224, 3340, 4030, 4342, 5177, 6680, 7723, 8060, 8684, 10354, 10855, 15446, 16120, 17368, 20708, 21710, 25885, 30892, 38615, 41416, 43420, 51770, 61784, 67301, 77230, 86840, 100399, 103540, 134602, 154460, 200798, 207080, 239413, 269204, 308920, 336505, 401596, 478826, 501995, 538408, 673010, 803192, 957652, 1003990, 1197065, 1289741, 1346020, 1915304, 2007980, 2394130, 2579482, 2692040, 3112369, 4015960, 4788260, 5158964, 6224738, 6448705, 9576520, 10317928, 12449476, 12897410, 15561845, 16766633, 24898952, 25794820, 31123690, 33533266, 39981971, 51589640, 62247380, 67066532, 79963942, 83833165, 124494760, 134133064, 159927884, 167666330, 199909855, 319855768, 335332660, 399819710, 519765623, 670665320, 799639420, 1039531246, 1599278840, 2079062492, 2598828115, 4158124984, 5197656230, 10395312460, 20790624920]

約数ペア:

[(1, 20790624920), (2, 10395312460), (4, 5197656230), (5, 4158124984), (8, 2598828115), (10, 2079062492), (13, 1599278840), (20, 1039531246), (26, 799639420), (31, 670665320), (40, 519765623), (52, 399819710), (62, 335332660), (65, 319855768), (104, 199909855), (124, 167666330), (130, 159927884), (155, 134133064), (167, 124494760), (248, 83833165), (260, 79963942), (310, 67066532), (334, 62247380), (403, 51589640), (520, 39981971), (620, 33533266), (668, 31123690), (806, 25794820), (835, 24898952), (1240, 16766633), (1336, 15561845), (1612, 12897410), (1670, 12449476), (2015, 10317928), (2171, 9576520), (3224, 6448705), (3340, 6224738), (4030, 5158964), (4342, 4788260), (5177, 4015960), (6680, 3112369), (7723, 2692040), (8060, 2579482), (8684, 2394130), (10354, 2007980), (10855, 1915304), (15446, 1346020), (16120, 1289741), (17368, 1197065), (20708, 1003990), (21710, 957652), (25885, 803192), (30892, 673010), (38615, 538408), (41416, 501995), (43420, 478826), (51770, 401596), (61784, 336505), (67301, 308920), (77230, 269204), (86840, 239413), (100399, 207080), (103540, 200798), (134602, 154460)]