20123548353280

素因数分解:

$2^8\times 5^1\times {\mathrm{127}}^1\times {\mathrm{123791513}}^1$

素因数の和:123791661

約数の個数: 72

約数和(自身を含む): 48581732086272

約数和(自身を除く): 28458183732992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 128, 160, 254, 256, 320, 508, 635, 640, 1016, 1270, 1280, 2032, 2540, 4064, 5080, 8128, 10160, 16256, 20320, 32512, 40640, 81280, 162560, 123791513, 247583026, 495166052, 618957565, 990332104, 1237915130, 1980664208, 2475830260, 3961328416, 4951660520, 7922656832, 9903321040, 15721522151, 15845313664, 19806642080, 31443044302, 31690627328, 39613284160, 62886088604, 78607610755, 79226568320, 125772177208, 157215221510, 158453136640, 251544354416, 314430443020, 503088708832, 628860886040, 1006177417664, 1257721772080, 2012354835328, 2515443544160, 4024709670656, 5030887088320, 10061774176640, 20123548353280]

約数ペア:

[(1, 20123548353280), (2, 10061774176640), (4, 5030887088320), (5, 4024709670656), (8, 2515443544160), (10, 2012354835328), (16, 1257721772080), (20, 1006177417664), (32, 628860886040), (40, 503088708832), (64, 314430443020), (80, 251544354416), (127, 158453136640), (128, 157215221510), (160, 125772177208), (254, 79226568320), (256, 78607610755), (320, 62886088604), (508, 39613284160), (635, 31690627328), (640, 31443044302), (1016, 19806642080), (1270, 15845313664), (1280, 15721522151), (2032, 9903321040), (2540, 7922656832), (4064, 4951660520), (5080, 3961328416), (8128, 2475830260), (10160, 1980664208), (16256, 1237915130), (20320, 990332104), (32512, 618957565), (40640, 495166052), (81280, 247583026), (162560, 123791513)]