21439910

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^2\times {\mathrm{97}}^1$

素因数の和:189

約数の個数: 48

約数和(自身を含む): 42039648

約数和(自身を除く): 20599738

約数列:

[1, 2, 5, 10, 23, 31, 46, 62, 97, 115, 155, 194, 230, 310, 485, 713, 961, 970, 1426, 1922, 2231, 3007, 3565, 4462, 4805, 6014, 7130, 9610, 11155, 15035, 22103, 22310, 30070, 44206, 69161, 93217, 110515, 138322, 186434, 221030, 345805, 466085, 691610, 932170, 2143991, 4287982, 10719955, 21439910]

約数ペア:

[(1, 21439910), (2, 10719955), (5, 4287982), (10, 2143991), (23, 932170), (31, 691610), (46, 466085), (62, 345805), (97, 221030), (115, 186434), (155, 138322), (194, 110515), (230, 93217), (310, 69161), (485, 44206), (713, 30070), (961, 22310), (970, 22103), (1426, 15035), (1922, 11155), (2231, 9610), (3007, 7130), (3565, 6014), (4462, 4805)]