21540224

素因数分解:

$2^7\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{521}}^1$

素因数の和:571

約数の個数: 64

約数和(自身を含む): 47919600

約数和(自身を除く): 26379376

約数列:

[1, 2, 4, 8, 16, 17, 19, 32, 34, 38, 64, 68, 76, 128, 136, 152, 272, 304, 323, 521, 544, 608, 646, 1042, 1088, 1216, 1292, 2084, 2176, 2432, 2584, 4168, 5168, 8336, 8857, 9899, 10336, 16672, 17714, 19798, 20672, 33344, 35428, 39596, 41344, 66688, 70856, 79192, 141712, 158384, 168283, 283424, 316768, 336566, 566848, 633536, 673132, 1133696, 1267072, 1346264, 2692528, 5385056, 10770112, 21540224]

約数ペア:

[(1, 21540224), (2, 10770112), (4, 5385056), (8, 2692528), (16, 1346264), (17, 1267072), (19, 1133696), (32, 673132), (34, 633536), (38, 566848), (64, 336566), (68, 316768), (76, 283424), (128, 168283), (136, 158384), (152, 141712), (272, 79192), (304, 70856), (323, 66688), (521, 41344), (544, 39596), (608, 35428), (646, 33344), (1042, 20672), (1088, 19798), (1216, 17714), (1292, 16672), (2084, 10336), (2176, 9899), (2432, 8857), (2584, 8336), (4168, 5168)]