20346880640

素因数分解:

$2^7\times 5^1\times {\mathrm{1381}}^1\times {\mathrm{23021}}^1$

素因数の和:24421

約数の個数: 64

約数和(自身を含む): 48679098120

約数和(自身を除く): 28332217480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 1381, 2762, 5524, 6905, 11048, 13810, 22096, 23021, 27620, 44192, 46042, 55240, 88384, 92084, 110480, 115105, 176768, 184168, 220960, 230210, 368336, 441920, 460420, 736672, 883840, 920840, 1473344, 1841680, 2946688, 3683360, 7366720, 14733440, 31792001, 63584002, 127168004, 158960005, 254336008, 317920010, 508672016, 635840020, 1017344032, 1271680040, 2034688064, 2543360080, 4069376128, 5086720160, 10173440320, 20346880640]

約数ペア:

[(1, 20346880640), (2, 10173440320), (4, 5086720160), (5, 4069376128), (8, 2543360080), (10, 2034688064), (16, 1271680040), (20, 1017344032), (32, 635840020), (40, 508672016), (64, 317920010), (80, 254336008), (128, 158960005), (160, 127168004), (320, 63584002), (640, 31792001), (1381, 14733440), (2762, 7366720), (5524, 3683360), (6905, 2946688), (11048, 1841680), (13810, 1473344), (22096, 920840), (23021, 883840), (27620, 736672), (44192, 460420), (46042, 441920), (55240, 368336), (88384, 230210), (92084, 220960), (110480, 184168), (115105, 176768)]