19980792

素因数分解:

$2^3\times 3^2\times {\mathrm{13}}^1\times {\mathrm{21347}}^1$

素因数の和:21372

約数の個数: 48

約数和(自身を含む): 58280040

約数和(自身を除く): 38299248

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 36, 39, 52, 72, 78, 104, 117, 156, 234, 312, 468, 936, 21347, 42694, 64041, 85388, 128082, 170776, 192123, 256164, 277511, 384246, 512328, 555022, 768492, 832533, 1110044, 1536984, 1665066, 2220088, 2497599, 3330132, 4995198, 6660264, 9990396, 19980792]

約数ペア:

[(1, 19980792), (2, 9990396), (3, 6660264), (4, 4995198), (6, 3330132), (8, 2497599), (9, 2220088), (12, 1665066), (13, 1536984), (18, 1110044), (24, 832533), (26, 768492), (36, 555022), (39, 512328), (52, 384246), (72, 277511), (78, 256164), (104, 192123), (117, 170776), (156, 128082), (234, 85388), (312, 64041), (468, 42694), (936, 21347)]