21237573

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1$

素因数の和:178

約数の個数: 64

約数和(自身を含む): 37601280

約数和(自身を除く): 16363707

約数列:

[1, 3, 7, 17, 19, 21, 31, 51, 57, 93, 101, 119, 133, 217, 303, 323, 357, 399, 527, 589, 651, 707, 969, 1581, 1717, 1767, 1919, 2121, 2261, 3131, 3689, 4123, 5151, 5757, 6783, 9393, 10013, 11067, 12019, 12369, 13433, 21917, 30039, 32623, 36057, 40299, 53227, 59489, 65751, 70091, 97869, 159681, 178467, 210273, 228361, 372589, 416423, 685083, 1011313, 1117767, 1249269, 3033939, 7079191, 21237573]

約数ペア:

[(1, 21237573), (3, 7079191), (7, 3033939), (17, 1249269), (19, 1117767), (21, 1011313), (31, 685083), (51, 416423), (57, 372589), (93, 228361), (101, 210273), (119, 178467), (133, 159681), (217, 97869), (303, 70091), (323, 65751), (357, 59489), (399, 53227), (527, 40299), (589, 36057), (651, 32623), (707, 30039), (969, 21917), (1581, 13433), (1717, 12369), (1767, 12019), (1919, 11067), (2121, 10013), (2261, 9393), (3131, 6783), (3689, 5757), (4123, 5151)]