20795320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1$

素因数の和:257

約数の個数: 128

約数和(自身を含む): 59875200

約数和(自身を除く): 39079880

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 29, 35, 40, 52, 56, 58, 65, 70, 91, 104, 116, 130, 140, 145, 182, 197, 203, 232, 260, 280, 290, 364, 377, 394, 406, 455, 520, 580, 728, 754, 788, 812, 910, 985, 1015, 1160, 1379, 1508, 1576, 1624, 1820, 1885, 1970, 2030, 2561, 2639, 2758, 3016, 3640, 3770, 3940, 4060, 5122, 5278, 5516, 5713, 6895, 7540, 7880, 8120, 10244, 10556, 11032, 11426, 12805, 13195, 13790, 15080, 17927, 20488, 21112, 22852, 25610, 26390, 27580, 28565, 35854, 39991, 45704, 51220, 52780, 55160, 57130, 71708, 74269, 79982, 89635, 102440, 105560, 114260, 143416, 148538, 159964, 179270, 199955, 228520, 297076, 319928, 358540, 371345, 399910, 519883, 594152, 717080, 742690, 799820, 1039766, 1485380, 1599640, 2079532, 2599415, 2970760, 4159064, 5198830, 10397660, 20795320]

約数ペア:

[(1, 20795320), (2, 10397660), (4, 5198830), (5, 4159064), (7, 2970760), (8, 2599415), (10, 2079532), (13, 1599640), (14, 1485380), (20, 1039766), (26, 799820), (28, 742690), (29, 717080), (35, 594152), (40, 519883), (52, 399910), (56, 371345), (58, 358540), (65, 319928), (70, 297076), (91, 228520), (104, 199955), (116, 179270), (130, 159964), (140, 148538), (145, 143416), (182, 114260), (197, 105560), (203, 102440), (232, 89635), (260, 79982), (280, 74269), (290, 71708), (364, 57130), (377, 55160), (394, 52780), (406, 51220), (455, 45704), (520, 39991), (580, 35854), (728, 28565), (754, 27580), (788, 26390), (812, 25610), (910, 22852), (985, 21112), (1015, 20488), (1160, 17927), (1379, 15080), (1508, 13790), (1576, 13195), (1624, 12805), (1820, 11426), (1885, 11032), (1970, 10556), (2030, 10244), (2561, 8120), (2639, 7880), (2758, 7540), (3016, 6895), (3640, 5713), (3770, 5516), (3940, 5278), (4060, 5122)]