81550040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{269}}^1$

素因数の和:357

約数の個数: 128

約数和(自身を含む): 220449600

約数和(自身を除く): 138899560

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 44, 52, 53, 55, 65, 88, 104, 106, 110, 130, 143, 212, 220, 260, 265, 269, 286, 424, 440, 520, 530, 538, 572, 583, 689, 715, 1060, 1076, 1144, 1166, 1345, 1378, 1430, 2120, 2152, 2332, 2690, 2756, 2860, 2915, 2959, 3445, 3497, 4664, 5380, 5512, 5720, 5830, 5918, 6890, 6994, 7579, 10760, 11660, 11836, 13780, 13988, 14257, 14795, 15158, 17485, 23320, 23672, 27560, 27976, 28514, 29590, 30316, 34970, 37895, 38467, 57028, 59180, 60632, 69940, 71285, 75790, 76934, 114056, 118360, 139880, 142570, 151580, 153868, 156827, 185341, 192335, 285140, 303160, 307736, 313654, 370682, 384670, 570280, 627308, 741364, 769340, 784135, 926705, 1254616, 1482728, 1538680, 1568270, 1853410, 2038751, 3136540, 3706820, 4077502, 6273080, 7413640, 8155004, 10193755, 16310008, 20387510, 40775020, 81550040]

約数ペア:

[(1, 81550040), (2, 40775020), (4, 20387510), (5, 16310008), (8, 10193755), (10, 8155004), (11, 7413640), (13, 6273080), (20, 4077502), (22, 3706820), (26, 3136540), (40, 2038751), (44, 1853410), (52, 1568270), (53, 1538680), (55, 1482728), (65, 1254616), (88, 926705), (104, 784135), (106, 769340), (110, 741364), (130, 627308), (143, 570280), (212, 384670), (220, 370682), (260, 313654), (265, 307736), (269, 303160), (286, 285140), (424, 192335), (440, 185341), (520, 156827), (530, 153868), (538, 151580), (572, 142570), (583, 139880), (689, 118360), (715, 114056), (1060, 76934), (1076, 75790), (1144, 71285), (1166, 69940), (1345, 60632), (1378, 59180), (1430, 57028), (2120, 38467), (2152, 37895), (2332, 34970), (2690, 30316), (2756, 29590), (2860, 28514), (2915, 27976), (2959, 27560), (3445, 23672), (3497, 23320), (4664, 17485), (5380, 15158), (5512, 14795), (5720, 14257), (5830, 13988), (5918, 13780), (6890, 11836), (6994, 11660), (7579, 10760)]