20121337480

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{299603}}^1$

素因数の和:299710

約数の個数: 64

約数和(自身を含む): 47888703360

約数和(自身を除く): 27767365880

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 73, 92, 115, 146, 184, 230, 292, 365, 460, 584, 730, 920, 1460, 1679, 2920, 3358, 6716, 8395, 13432, 16790, 33580, 67160, 299603, 599206, 1198412, 1498015, 2396824, 2996030, 5992060, 6890869, 11984120, 13781738, 21871019, 27563476, 34454345, 43742038, 55126952, 68908690, 87484076, 109355095, 137817380, 174968152, 218710190, 275634760, 437420380, 503033437, 874840760, 1006066874, 2012133748, 2515167185, 4024267496, 5030334370, 10060668740, 20121337480]

約数ペア:

[(1, 20121337480), (2, 10060668740), (4, 5030334370), (5, 4024267496), (8, 2515167185), (10, 2012133748), (20, 1006066874), (23, 874840760), (40, 503033437), (46, 437420380), (73, 275634760), (92, 218710190), (115, 174968152), (146, 137817380), (184, 109355095), (230, 87484076), (292, 68908690), (365, 55126952), (460, 43742038), (584, 34454345), (730, 27563476), (920, 21871019), (1460, 13781738), (1679, 11984120), (2920, 6890869), (3358, 5992060), (6716, 2996030), (8395, 2396824), (13432, 1498015), (16790, 1198412), (33580, 599206), (67160, 299603)]