19699020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{9949}}^1$

素因数の和:9975

約数の個数: 72

約数和(自身を含む): 65192400

約数和(自身を除く): 45493380

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 9949, 19898, 29847, 39796, 49745, 59694, 89541, 99490, 109439, 119388, 149235, 179082, 198980, 218878, 298470, 328317, 358164, 437756, 447705, 547195, 596940, 656634, 895410, 984951, 1094390, 1313268, 1641585, 1790820, 1969902, 2188780, 3283170, 3939804, 4924755, 6566340, 9849510, 19699020]

約数ペア:

[(1, 19699020), (2, 9849510), (3, 6566340), (4, 4924755), (5, 3939804), (6, 3283170), (9, 2188780), (10, 1969902), (11, 1790820), (12, 1641585), (15, 1313268), (18, 1094390), (20, 984951), (22, 895410), (30, 656634), (33, 596940), (36, 547195), (44, 447705), (45, 437756), (55, 358164), (60, 328317), (66, 298470), (90, 218878), (99, 198980), (110, 179082), (132, 149235), (165, 119388), (180, 109439), (198, 99490), (220, 89541), (330, 59694), (396, 49745), (495, 39796), (660, 29847), (990, 19898), (1980, 9949)]