21990486

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1621}}^1$

素因数の和:1669

約数の個数: 64

約数和(自身を含む): 56056320

約数和(自身を除く): 34065834

約数列:

[1, 2, 3, 6, 7, 14, 17, 19, 21, 34, 38, 42, 51, 57, 102, 114, 119, 133, 238, 266, 323, 357, 399, 646, 714, 798, 969, 1621, 1938, 2261, 3242, 4522, 4863, 6783, 9726, 11347, 13566, 22694, 27557, 30799, 34041, 55114, 61598, 68082, 82671, 92397, 165342, 184794, 192899, 215593, 385798, 431186, 523583, 578697, 646779, 1047166, 1157394, 1293558, 1570749, 3141498, 3665081, 7330162, 10995243, 21990486]

約数ペア:

[(1, 21990486), (2, 10995243), (3, 7330162), (6, 3665081), (7, 3141498), (14, 1570749), (17, 1293558), (19, 1157394), (21, 1047166), (34, 646779), (38, 578697), (42, 523583), (51, 431186), (57, 385798), (102, 215593), (114, 192899), (119, 184794), (133, 165342), (238, 92397), (266, 82671), (323, 68082), (357, 61598), (399, 55114), (646, 34041), (714, 30799), (798, 27557), (969, 22694), (1621, 13566), (1938, 11347), (2261, 9726), (3242, 6783), (4522, 4863)]