19163320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{449}}^1$

素因数の和:568

約数の個数: 64

約数和(自身を含む): 47628000

約数和(自身を除く): 28464680

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 97, 110, 194, 220, 388, 440, 449, 485, 776, 898, 970, 1067, 1796, 1940, 2134, 2245, 3592, 3880, 4268, 4490, 4939, 5335, 8536, 8980, 9878, 10670, 17960, 19756, 21340, 24695, 39512, 42680, 43553, 49390, 87106, 98780, 174212, 197560, 217765, 348424, 435530, 479083, 871060, 958166, 1742120, 1916332, 2395415, 3832664, 4790830, 9581660, 19163320]

約数ペア:

[(1, 19163320), (2, 9581660), (4, 4790830), (5, 3832664), (8, 2395415), (10, 1916332), (11, 1742120), (20, 958166), (22, 871060), (40, 479083), (44, 435530), (55, 348424), (88, 217765), (97, 197560), (110, 174212), (194, 98780), (220, 87106), (388, 49390), (440, 43553), (449, 42680), (485, 39512), (776, 24695), (898, 21340), (970, 19756), (1067, 17960), (1796, 10670), (1940, 9878), (2134, 8980), (2245, 8536), (3592, 5335), (3880, 4939), (4268, 4490)]