80400640

素因数分解:

$2^8\times 5^1\times {\mathrm{23}}^1\times {\mathrm{2731}}^1$

素因数の和:2775

約数の個数: 72

約数和(自身を含む): 201031488

約数和(自身を除く): 120630848

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 128, 160, 184, 230, 256, 320, 368, 460, 640, 736, 920, 1280, 1472, 1840, 2731, 2944, 3680, 5462, 5888, 7360, 10924, 13655, 14720, 21848, 27310, 29440, 43696, 54620, 62813, 87392, 109240, 125626, 174784, 218480, 251252, 314065, 349568, 436960, 502504, 628130, 699136, 873920, 1005008, 1256260, 1747840, 2010016, 2512520, 3495680, 4020032, 5025040, 8040064, 10050080, 16080128, 20100160, 40200320, 80400640]

約数ペア:

[(1, 80400640), (2, 40200320), (4, 20100160), (5, 16080128), (8, 10050080), (10, 8040064), (16, 5025040), (20, 4020032), (23, 3495680), (32, 2512520), (40, 2010016), (46, 1747840), (64, 1256260), (80, 1005008), (92, 873920), (115, 699136), (128, 628130), (160, 502504), (184, 436960), (230, 349568), (256, 314065), (320, 251252), (368, 218480), (460, 174784), (640, 125626), (736, 109240), (920, 87392), (1280, 62813), (1472, 54620), (1840, 43696), (2731, 29440), (2944, 27310), (3680, 21848), (5462, 14720), (5888, 13655), (7360, 10924)]