81912040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{173}}^1$

素因数の和:299

約数の個数: 128

約数和(自身を含む): 225504000

約数和(自身を除く): 143591960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 56, 70, 76, 89, 95, 133, 140, 152, 173, 178, 190, 266, 280, 346, 356, 380, 445, 532, 623, 665, 692, 712, 760, 865, 890, 1064, 1211, 1246, 1330, 1384, 1691, 1730, 1780, 2422, 2492, 2660, 3115, 3287, 3382, 3460, 3560, 4844, 4984, 5320, 6055, 6230, 6574, 6764, 6920, 8455, 9688, 11837, 12110, 12460, 13148, 13528, 15397, 16435, 16910, 23009, 23674, 24220, 24920, 26296, 30794, 32870, 33820, 46018, 47348, 48440, 59185, 61588, 65740, 67640, 76985, 92036, 94696, 107779, 115045, 118370, 123176, 131480, 153970, 184072, 215558, 230090, 236740, 292543, 307940, 431116, 460180, 473480, 538895, 585086, 615880, 862232, 920360, 1077790, 1170172, 1462715, 2047801, 2155580, 2340344, 2925430, 4095602, 4311160, 5850860, 8191204, 10239005, 11701720, 16382408, 20478010, 40956020, 81912040]

約数ペア:

[(1, 81912040), (2, 40956020), (4, 20478010), (5, 16382408), (7, 11701720), (8, 10239005), (10, 8191204), (14, 5850860), (19, 4311160), (20, 4095602), (28, 2925430), (35, 2340344), (38, 2155580), (40, 2047801), (56, 1462715), (70, 1170172), (76, 1077790), (89, 920360), (95, 862232), (133, 615880), (140, 585086), (152, 538895), (173, 473480), (178, 460180), (190, 431116), (266, 307940), (280, 292543), (346, 236740), (356, 230090), (380, 215558), (445, 184072), (532, 153970), (623, 131480), (665, 123176), (692, 118370), (712, 115045), (760, 107779), (865, 94696), (890, 92036), (1064, 76985), (1211, 67640), (1246, 65740), (1330, 61588), (1384, 59185), (1691, 48440), (1730, 47348), (1780, 46018), (2422, 33820), (2492, 32870), (2660, 30794), (3115, 26296), (3287, 24920), (3382, 24220), (3460, 23674), (3560, 23009), (4844, 16910), (4984, 16435), (5320, 15397), (6055, 13528), (6230, 13148), (6574, 12460), (6764, 12110), (6920, 11837), (8455, 9688)]