21712194

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{103}}^1\times {\mathrm{239}}^1$

素因数の和:364

約数の個数: 72

約数和(自身を含む): 55486080

約数和(自身を除く): 33773886

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 63, 98, 103, 126, 147, 206, 239, 294, 309, 441, 478, 618, 717, 721, 882, 927, 1434, 1442, 1673, 1854, 2151, 2163, 3346, 4302, 4326, 5019, 5047, 6489, 10038, 10094, 11711, 12978, 15057, 15141, 23422, 24617, 30114, 30282, 35133, 45423, 49234, 70266, 73851, 90846, 105399, 147702, 172319, 210798, 221553, 344638, 443106, 516957, 1033914, 1206233, 1550871, 2412466, 3101742, 3618699, 7237398, 10856097, 21712194]

約数ペア:

[(1, 21712194), (2, 10856097), (3, 7237398), (6, 3618699), (7, 3101742), (9, 2412466), (14, 1550871), (18, 1206233), (21, 1033914), (42, 516957), (49, 443106), (63, 344638), (98, 221553), (103, 210798), (126, 172319), (147, 147702), (206, 105399), (239, 90846), (294, 73851), (309, 70266), (441, 49234), (478, 45423), (618, 35133), (717, 30282), (721, 30114), (882, 24617), (927, 23422), (1434, 15141), (1442, 15057), (1673, 12978), (1854, 11711), (2151, 10094), (2163, 10038), (3346, 6489), (4302, 5047), (4326, 5019)]