81030040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{197}}^1$

素因数の和:341

約数の個数: 128

約数和(自身を含む): 227525760

約数和(自身を除く): 146495720

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 113, 130, 140, 182, 197, 226, 260, 280, 364, 394, 452, 455, 520, 565, 728, 788, 791, 904, 910, 985, 1130, 1379, 1469, 1576, 1582, 1820, 1970, 2260, 2561, 2758, 2938, 3164, 3640, 3940, 3955, 4520, 5122, 5516, 5876, 6328, 6895, 7345, 7880, 7910, 10244, 10283, 11032, 11752, 12805, 13790, 14690, 15820, 17927, 20488, 20566, 22261, 25610, 27580, 29380, 31640, 35854, 41132, 44522, 51220, 51415, 55160, 58760, 71708, 82264, 89044, 89635, 102440, 102830, 111305, 143416, 155827, 178088, 179270, 205660, 222610, 289393, 311654, 358540, 411320, 445220, 578786, 623308, 717080, 779135, 890440, 1157572, 1246616, 1446965, 1558270, 2025751, 2315144, 2893930, 3116540, 4051502, 5787860, 6233080, 8103004, 10128755, 11575720, 16206008, 20257510, 40515020, 81030040]

約数ペア:

[(1, 81030040), (2, 40515020), (4, 20257510), (5, 16206008), (7, 11575720), (8, 10128755), (10, 8103004), (13, 6233080), (14, 5787860), (20, 4051502), (26, 3116540), (28, 2893930), (35, 2315144), (40, 2025751), (52, 1558270), (56, 1446965), (65, 1246616), (70, 1157572), (91, 890440), (104, 779135), (113, 717080), (130, 623308), (140, 578786), (182, 445220), (197, 411320), (226, 358540), (260, 311654), (280, 289393), (364, 222610), (394, 205660), (452, 179270), (455, 178088), (520, 155827), (565, 143416), (728, 111305), (788, 102830), (791, 102440), (904, 89635), (910, 89044), (985, 82264), (1130, 71708), (1379, 58760), (1469, 55160), (1576, 51415), (1582, 51220), (1820, 44522), (1970, 41132), (2260, 35854), (2561, 31640), (2758, 29380), (2938, 27580), (3164, 25610), (3640, 22261), (3940, 20566), (3955, 20488), (4520, 17927), (5122, 15820), (5516, 14690), (5876, 13790), (6328, 12805), (6895, 11752), (7345, 11032), (7880, 10283), (7910, 10244)]