21428178436

素因数分解:

$2^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{659}}^1\times {\mathrm{7213}}^1$

素因数の和:7913

約数の個数: 72

約数和(自身を含む): 45593634240

約数和(自身を除く): 24165455804

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 49, 92, 98, 161, 196, 322, 644, 659, 1127, 1318, 2254, 2636, 4508, 4613, 7213, 9226, 14426, 15157, 18452, 28852, 30314, 32291, 50491, 60628, 64582, 100982, 106099, 129164, 165899, 201964, 212198, 331798, 353437, 424396, 663596, 706874, 742693, 1161293, 1413748, 1485386, 2322586, 2970772, 4645172, 4753367, 8129051, 9506734, 16258102, 19013468, 32516204, 33273569, 66547138, 109327441, 133094276, 218654882, 232914983, 437309764, 465829966, 765292087, 931659932, 1530584174, 3061168348, 5357044609, 10714089218, 21428178436]

約数ペア:

[(1, 21428178436), (2, 10714089218), (4, 5357044609), (7, 3061168348), (14, 1530584174), (23, 931659932), (28, 765292087), (46, 465829966), (49, 437309764), (92, 232914983), (98, 218654882), (161, 133094276), (196, 109327441), (322, 66547138), (644, 33273569), (659, 32516204), (1127, 19013468), (1318, 16258102), (2254, 9506734), (2636, 8129051), (4508, 4753367), (4613, 4645172), (7213, 2970772), (9226, 2322586), (14426, 1485386), (15157, 1413748), (18452, 1161293), (28852, 742693), (30314, 706874), (32291, 663596), (50491, 424396), (60628, 353437), (64582, 331798), (100982, 212198), (106099, 201964), (129164, 165899)]