1861020

素因数分解:

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

素因数の和:240

約数の個数: 108

約数和(自身を含む): 6597864

約数和(自身を除く): 4736844

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 211, 245, 252, 294, 315, 420, 422, 441, 490, 588, 630, 633, 735, 844, 882, 980, 1055, 1260, 1266, 1470, 1477, 1764, 1899, 2110, 2205, 2532, 2940, 2954, 3165, 3798, 4220, 4410, 4431, 5908, 6330, 7385, 7596, 8820, 8862, 9495, 10339, 12660, 13293, 14770, 17724, 18990, 20678, 22155, 26586, 29540, 31017, 37980, 41356, 44310, 51695, 53172, 62034, 66465, 88620, 93051, 103390, 124068, 132930, 155085, 186102, 206780, 265860, 310170, 372204, 465255, 620340, 930510, 1861020]

約数ペア:

[(1, 1861020), (2, 930510), (3, 620340), (4, 465255), (5, 372204), (6, 310170), (7, 265860), (9, 206780), (10, 186102), (12, 155085), (14, 132930), (15, 124068), (18, 103390), (20, 93051), (21, 88620), (28, 66465), (30, 62034), (35, 53172), (36, 51695), (42, 44310), (45, 41356), (49, 37980), (60, 31017), (63, 29540), (70, 26586), (84, 22155), (90, 20678), (98, 18990), (105, 17724), (126, 14770), (140, 13293), (147, 12660), (180, 10339), (196, 9495), (210, 8862), (211, 8820), (245, 7596), (252, 7385), (294, 6330), (315, 5908), (420, 4431), (422, 4410), (441, 4220), (490, 3798), (588, 3165), (630, 2954), (633, 2940), (735, 2532), (844, 2205), (882, 2110), (980, 1899), (1055, 1764), (1260, 1477), (1266, 1470)]