18804690

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{271}}^1$

素因数の和:544

約数の個数: 64

約数和(自身を含む): 50526720

約数和(自身を除く): 31722030

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 257, 270, 271, 514, 542, 771, 813, 1285, 1355, 1542, 1626, 2313, 2439, 2570, 2710, 3855, 4065, 4626, 4878, 6939, 7317, 7710, 8130, 11565, 12195, 13878, 14634, 23130, 24390, 34695, 36585, 69390, 69647, 73170, 139294, 208941, 348235, 417882, 626823, 696470, 1044705, 1253646, 1880469, 2089410, 3134115, 3760938, 6268230, 9402345, 18804690]

約数ペア:

[(1, 18804690), (2, 9402345), (3, 6268230), (5, 3760938), (6, 3134115), (9, 2089410), (10, 1880469), (15, 1253646), (18, 1044705), (27, 696470), (30, 626823), (45, 417882), (54, 348235), (90, 208941), (135, 139294), (257, 73170), (270, 69647), (271, 69390), (514, 36585), (542, 34695), (771, 24390), (813, 23130), (1285, 14634), (1355, 13878), (1542, 12195), (1626, 11565), (2313, 8130), (2439, 7710), (2570, 7317), (2710, 6939), (3855, 4878), (4065, 4626)]