289808840

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{113}}^1\times {\mathrm{661}}^1$

素因数の和:882

約数の個数: 64

約数和(自身を含む): 665627760

約数和(自身を除く): 375818920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 113, 194, 226, 388, 452, 485, 565, 661, 776, 904, 970, 1130, 1322, 1940, 2260, 2644, 3305, 3880, 4520, 5288, 6610, 10961, 13220, 21922, 26440, 43844, 54805, 64117, 74693, 87688, 109610, 128234, 149386, 219220, 256468, 298772, 320585, 373465, 438440, 512936, 597544, 641170, 746930, 1282340, 1493860, 2564680, 2987720, 7245221, 14490442, 28980884, 36226105, 57961768, 72452210, 144904420, 289808840]

約数ペア:

[(1, 289808840), (2, 144904420), (4, 72452210), (5, 57961768), (8, 36226105), (10, 28980884), (20, 14490442), (40, 7245221), (97, 2987720), (113, 2564680), (194, 1493860), (226, 1282340), (388, 746930), (452, 641170), (485, 597544), (565, 512936), (661, 438440), (776, 373465), (904, 320585), (970, 298772), (1130, 256468), (1322, 219220), (1940, 149386), (2260, 128234), (2644, 109610), (3305, 87688), (3880, 74693), (4520, 64117), (5288, 54805), (6610, 43844), (10961, 26440), (13220, 21922)]