18881696

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{569}}^1$

素因数の和:657

約数の個数: 48

約数和(自身を含む): 40075560

約数和(自身を除く): 21193864

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 61, 68, 122, 136, 244, 272, 488, 544, 569, 976, 1037, 1138, 1952, 2074, 2276, 4148, 4552, 8296, 9104, 9673, 16592, 18208, 19346, 33184, 34709, 38692, 69418, 77384, 138836, 154768, 277672, 309536, 555344, 590053, 1110688, 1180106, 2360212, 4720424, 9440848, 18881696]

約数ペア:

[(1, 18881696), (2, 9440848), (4, 4720424), (8, 2360212), (16, 1180106), (17, 1110688), (32, 590053), (34, 555344), (61, 309536), (68, 277672), (122, 154768), (136, 138836), (244, 77384), (272, 69418), (488, 38692), (544, 34709), (569, 33184), (976, 19346), (1037, 18208), (1138, 16592), (1952, 9673), (2074, 9104), (2276, 8296), (4148, 4552)]