21357800

素因数分解:

$2^3\times 5^2\times {\mathrm{23}}^1\times {\mathrm{4643}}^1$

素因数の和:4682

約数の個数: 48

約数和(自身を含む): 51827040

約数和(自身を除く): 30469240

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 25, 40, 46, 50, 92, 100, 115, 184, 200, 230, 460, 575, 920, 1150, 2300, 4600, 4643, 9286, 18572, 23215, 37144, 46430, 92860, 106789, 116075, 185720, 213578, 232150, 427156, 464300, 533945, 854312, 928600, 1067890, 2135780, 2669725, 4271560, 5339450, 10678900, 21357800]

約数ペア:

[(1, 21357800), (2, 10678900), (4, 5339450), (5, 4271560), (8, 2669725), (10, 2135780), (20, 1067890), (23, 928600), (25, 854312), (40, 533945), (46, 464300), (50, 427156), (92, 232150), (100, 213578), (115, 185720), (184, 116075), (200, 106789), (230, 92860), (460, 46430), (575, 37144), (920, 23215), (1150, 18572), (2300, 9286), (4600, 4643)]