19521720

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{257}}^1$

素因数の和:485

約数の個数: 96

約数和(自身を含む): 63994320

約数和(自身を除く): 44472600

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 211, 257, 360, 422, 514, 633, 771, 844, 1028, 1055, 1266, 1285, 1542, 1688, 1899, 2056, 2110, 2313, 2532, 2570, 3084, 3165, 3798, 3855, 4220, 4626, 5064, 5140, 6168, 6330, 7596, 7710, 8440, 9252, 9495, 10280, 11565, 12660, 15192, 15420, 18504, 18990, 23130, 25320, 30840, 37980, 46260, 54227, 75960, 92520, 108454, 162681, 216908, 271135, 325362, 433816, 488043, 542270, 650724, 813405, 976086, 1084540, 1301448, 1626810, 1952172, 2169080, 2440215, 3253620, 3904344, 4880430, 6507240, 9760860, 19521720]

約数ペア:

[(1, 19521720), (2, 9760860), (3, 6507240), (4, 4880430), (5, 3904344), (6, 3253620), (8, 2440215), (9, 2169080), (10, 1952172), (12, 1626810), (15, 1301448), (18, 1084540), (20, 976086), (24, 813405), (30, 650724), (36, 542270), (40, 488043), (45, 433816), (60, 325362), (72, 271135), (90, 216908), (120, 162681), (180, 108454), (211, 92520), (257, 75960), (360, 54227), (422, 46260), (514, 37980), (633, 30840), (771, 25320), (844, 23130), (1028, 18990), (1055, 18504), (1266, 15420), (1285, 15192), (1542, 12660), (1688, 11565), (1899, 10280), (2056, 9495), (2110, 9252), (2313, 8440), (2532, 7710), (2570, 7596), (3084, 6330), (3165, 6168), (3798, 5140), (3855, 5064), (4220, 4626)]