81451370

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1$

素因数の和:220

約数の個数: 128

約数和(自身を含む): 201277440

約数和(自身を除く): 119826070

約数列:

[1, 2, 5, 7, 10, 11, 13, 14, 22, 26, 35, 55, 65, 70, 77, 79, 91, 103, 110, 130, 143, 154, 158, 182, 206, 286, 385, 395, 455, 515, 553, 715, 721, 770, 790, 869, 910, 1001, 1027, 1030, 1106, 1133, 1339, 1430, 1442, 1738, 2002, 2054, 2266, 2678, 2765, 3605, 4345, 5005, 5135, 5530, 5665, 6083, 6695, 7189, 7210, 7931, 8137, 8690, 9373, 10010, 10270, 11297, 11330, 12166, 13390, 14378, 14729, 15862, 16274, 18746, 22594, 29458, 30415, 35945, 39655, 40685, 46865, 56485, 56959, 60830, 71890, 73645, 79079, 79310, 81370, 89507, 93730, 103103, 105781, 112970, 113918, 147290, 158158, 179014, 206206, 211562, 284795, 395395, 447535, 515515, 528905, 569590, 626549, 740467, 790790, 895070, 1031030, 1057810, 1163591, 1253098, 1480934, 2327182, 3132745, 3702335, 5817955, 6265490, 7404670, 8145137, 11635910, 16290274, 40725685, 81451370]

約数ペア:

[(1, 81451370), (2, 40725685), (5, 16290274), (7, 11635910), (10, 8145137), (11, 7404670), (13, 6265490), (14, 5817955), (22, 3702335), (26, 3132745), (35, 2327182), (55, 1480934), (65, 1253098), (70, 1163591), (77, 1057810), (79, 1031030), (91, 895070), (103, 790790), (110, 740467), (130, 626549), (143, 569590), (154, 528905), (158, 515515), (182, 447535), (206, 395395), (286, 284795), (385, 211562), (395, 206206), (455, 179014), (515, 158158), (553, 147290), (715, 113918), (721, 112970), (770, 105781), (790, 103103), (869, 93730), (910, 89507), (1001, 81370), (1027, 79310), (1030, 79079), (1106, 73645), (1133, 71890), (1339, 60830), (1430, 56959), (1442, 56485), (1738, 46865), (2002, 40685), (2054, 39655), (2266, 35945), (2678, 30415), (2765, 29458), (3605, 22594), (4345, 18746), (5005, 16274), (5135, 15862), (5530, 14729), (5665, 14378), (6083, 13390), (6695, 12166), (7189, 11330), (7210, 11297), (7931, 10270), (8137, 10010), (8690, 9373)]