81303840

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{431}}^1$

素因数の和:583

約数の個数: 144

約数和(自身を含む): 280215936

約数和(自身を除く): 198912096

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 131, 144, 160, 180, 240, 262, 288, 360, 393, 431, 480, 524, 655, 720, 786, 862, 1048, 1179, 1293, 1310, 1440, 1572, 1724, 1965, 2096, 2155, 2358, 2586, 2620, 3144, 3448, 3879, 3930, 4192, 4310, 4716, 5172, 5240, 5895, 6288, 6465, 6896, 7758, 7860, 8620, 9432, 10344, 10480, 11790, 12576, 12930, 13792, 15516, 15720, 17240, 18864, 19395, 20688, 20960, 23580, 25860, 31032, 31440, 34480, 37728, 38790, 41376, 47160, 51720, 56461, 62064, 62880, 68960, 77580, 94320, 103440, 112922, 124128, 155160, 169383, 188640, 206880, 225844, 282305, 310320, 338766, 451688, 508149, 564610, 620640, 677532, 846915, 903376, 1016298, 1129220, 1355064, 1693830, 1806752, 2032596, 2258440, 2540745, 2710128, 3387660, 4065192, 4516880, 5081490, 5420256, 6775320, 8130384, 9033760, 10162980, 13550640, 16260768, 20325960, 27101280, 40651920, 81303840]

約数ペア:

[(1, 81303840), (2, 40651920), (3, 27101280), (4, 20325960), (5, 16260768), (6, 13550640), (8, 10162980), (9, 9033760), (10, 8130384), (12, 6775320), (15, 5420256), (16, 5081490), (18, 4516880), (20, 4065192), (24, 3387660), (30, 2710128), (32, 2540745), (36, 2258440), (40, 2032596), (45, 1806752), (48, 1693830), (60, 1355064), (72, 1129220), (80, 1016298), (90, 903376), (96, 846915), (120, 677532), (131, 620640), (144, 564610), (160, 508149), (180, 451688), (240, 338766), (262, 310320), (288, 282305), (360, 225844), (393, 206880), (431, 188640), (480, 169383), (524, 155160), (655, 124128), (720, 112922), (786, 103440), (862, 94320), (1048, 77580), (1179, 68960), (1293, 62880), (1310, 62064), (1440, 56461), (1572, 51720), (1724, 47160), (1965, 41376), (2096, 38790), (2155, 37728), (2358, 34480), (2586, 31440), (2620, 31032), (3144, 25860), (3448, 23580), (3879, 20960), (3930, 20688), (4192, 19395), (4310, 18864), (4716, 17240), (5172, 15720), (5240, 15516), (5895, 13792), (6288, 12930), (6465, 12576), (6896, 11790), (7758, 10480), (7860, 10344), (8620, 9432)]