21985124

素因数分解:

$2^2\times 7^2\times {\mathrm{223}}^1\times {\mathrm{503}}^1$

素因数の和:744

約数の個数: 36

約数和(自身を含む): 45045504

約数和(自身を除く): 23060380

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 223, 446, 503, 892, 1006, 1561, 2012, 3122, 3521, 6244, 7042, 10927, 14084, 21854, 24647, 43708, 49294, 98588, 112169, 224338, 448676, 785183, 1570366, 3140732, 5496281, 10992562, 21985124]

約数ペア:

[(1, 21985124), (2, 10992562), (4, 5496281), (7, 3140732), (14, 1570366), (28, 785183), (49, 448676), (98, 224338), (196, 112169), (223, 98588), (446, 49294), (503, 43708), (892, 24647), (1006, 21854), (1561, 14084), (2012, 10927), (3122, 7042), (3521, 6244)]