18695560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{229}}^1$

素因数の和:410

約数の個数: 64

約数和(自身を含む): 45788400

約数和(自身を除く): 27092840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 157, 229, 260, 314, 458, 520, 628, 785, 916, 1145, 1256, 1570, 1832, 2041, 2290, 2977, 3140, 4082, 4580, 5954, 6280, 8164, 9160, 10205, 11908, 14885, 16328, 20410, 23816, 29770, 35953, 40820, 59540, 71906, 81640, 119080, 143812, 179765, 287624, 359530, 467389, 719060, 934778, 1438120, 1869556, 2336945, 3739112, 4673890, 9347780, 18695560]

約数ペア:

[(1, 18695560), (2, 9347780), (4, 4673890), (5, 3739112), (8, 2336945), (10, 1869556), (13, 1438120), (20, 934778), (26, 719060), (40, 467389), (52, 359530), (65, 287624), (104, 179765), (130, 143812), (157, 119080), (229, 81640), (260, 71906), (314, 59540), (458, 40820), (520, 35953), (628, 29770), (785, 23816), (916, 20410), (1145, 16328), (1256, 14885), (1570, 11908), (1832, 10205), (2041, 9160), (2290, 8164), (2977, 6280), (3140, 5954), (4082, 4580)]