1981800520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{307733}}^1$

素因数の和:307774

約数の個数: 64

約数和(自身を含む): 5317643520

約数和(自身を除く): 3335843000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1288, 1610, 3220, 6440, 307733, 615466, 1230932, 1538665, 2154131, 2461864, 3077330, 4308262, 6154660, 7077859, 8616524, 10770655, 12309320, 14155718, 17233048, 21541310, 28311436, 35389295, 43082620, 49545013, 56622872, 70778590, 86165240, 99090026, 141557180, 198180052, 247725065, 283114360, 396360104, 495450130, 990900260, 1981800520]

約数ペア:

[(1, 1981800520), (2, 990900260), (4, 495450130), (5, 396360104), (7, 283114360), (8, 247725065), (10, 198180052), (14, 141557180), (20, 99090026), (23, 86165240), (28, 70778590), (35, 56622872), (40, 49545013), (46, 43082620), (56, 35389295), (70, 28311436), (92, 21541310), (115, 17233048), (140, 14155718), (161, 12309320), (184, 10770655), (230, 8616524), (280, 7077859), (322, 6154660), (460, 4308262), (644, 3077330), (805, 2461864), (920, 2154131), (1288, 1538665), (1610, 1230932), (3220, 615466), (6440, 307733)]