18889974

素因数分解:

$2^1\times 3^2\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{349}}^1$

素因数の和:485

約数の個数: 48

約数和(自身を含む): 42806400

約数和(自身を除く): 23916426

約数列:

[1, 2, 3, 6, 9, 18, 31, 62, 93, 97, 186, 194, 279, 291, 349, 558, 582, 698, 873, 1047, 1746, 2094, 3007, 3141, 6014, 6282, 9021, 10819, 18042, 21638, 27063, 32457, 33853, 54126, 64914, 67706, 97371, 101559, 194742, 203118, 304677, 609354, 1049443, 2098886, 3148329, 6296658, 9444987, 18889974]

約数ペア:

[(1, 18889974), (2, 9444987), (3, 6296658), (6, 3148329), (9, 2098886), (18, 1049443), (31, 609354), (62, 304677), (93, 203118), (97, 194742), (186, 101559), (194, 97371), (279, 67706), (291, 64914), (349, 54126), (558, 33853), (582, 32457), (698, 27063), (873, 21638), (1047, 18042), (1746, 10819), (2094, 9021), (3007, 6282), (3141, 6014)]