19407780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{211}}^1$

素因数の和:306

約数の個数: 144

約数和(自身を含む): 68525184

約数和(自身を除く): 49117404

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 73, 84, 90, 105, 126, 140, 146, 180, 210, 211, 219, 252, 292, 315, 365, 420, 422, 438, 511, 630, 633, 657, 730, 844, 876, 1022, 1055, 1095, 1260, 1266, 1314, 1460, 1477, 1533, 1899, 2044, 2110, 2190, 2532, 2555, 2628, 2954, 3066, 3165, 3285, 3798, 4220, 4380, 4431, 4599, 5110, 5908, 6132, 6330, 6570, 7385, 7596, 7665, 8862, 9198, 9495, 10220, 12660, 13140, 13293, 14770, 15330, 15403, 17724, 18396, 18990, 22155, 22995, 26586, 29540, 30660, 30806, 37980, 44310, 45990, 46209, 53172, 61612, 66465, 77015, 88620, 91980, 92418, 107821, 132930, 138627, 154030, 184836, 215642, 231045, 265860, 277254, 308060, 323463, 431284, 462090, 539105, 554508, 646926, 693135, 924180, 970389, 1078210, 1293852, 1386270, 1617315, 1940778, 2156420, 2772540, 3234630, 3881556, 4851945, 6469260, 9703890, 19407780]

約数ペア:

[(1, 19407780), (2, 9703890), (3, 6469260), (4, 4851945), (5, 3881556), (6, 3234630), (7, 2772540), (9, 2156420), (10, 1940778), (12, 1617315), (14, 1386270), (15, 1293852), (18, 1078210), (20, 970389), (21, 924180), (28, 693135), (30, 646926), (35, 554508), (36, 539105), (42, 462090), (45, 431284), (60, 323463), (63, 308060), (70, 277254), (73, 265860), (84, 231045), (90, 215642), (105, 184836), (126, 154030), (140, 138627), (146, 132930), (180, 107821), (210, 92418), (211, 91980), (219, 88620), (252, 77015), (292, 66465), (315, 61612), (365, 53172), (420, 46209), (422, 45990), (438, 44310), (511, 37980), (630, 30806), (633, 30660), (657, 29540), (730, 26586), (844, 22995), (876, 22155), (1022, 18990), (1055, 18396), (1095, 17724), (1260, 15403), (1266, 15330), (1314, 14770), (1460, 13293), (1477, 13140), (1533, 12660), (1899, 10220), (2044, 9495), (2110, 9198), (2190, 8862), (2532, 7665), (2555, 7596), (2628, 7385), (2954, 6570), (3066, 6330), (3165, 6132), (3285, 5908), (3798, 5110), (4220, 4599), (4380, 4431)]