21423688

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{307}}^1$

素因数の和:398

約数の個数: 64

約数和(自身を含む): 48121920

約数和(自身を除く): 26698232

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 61, 88, 104, 122, 143, 244, 286, 307, 488, 572, 614, 671, 793, 1144, 1228, 1342, 1586, 2456, 2684, 3172, 3377, 3991, 5368, 6344, 6754, 7982, 8723, 13508, 15964, 17446, 18727, 27016, 31928, 34892, 37454, 43901, 69784, 74908, 87802, 149816, 175604, 205997, 243451, 351208, 411994, 486902, 823988, 973804, 1647976, 1947608, 2677961, 5355922, 10711844, 21423688]

約数ペア:

[(1, 21423688), (2, 10711844), (4, 5355922), (8, 2677961), (11, 1947608), (13, 1647976), (22, 973804), (26, 823988), (44, 486902), (52, 411994), (61, 351208), (88, 243451), (104, 205997), (122, 175604), (143, 149816), (244, 87802), (286, 74908), (307, 69784), (488, 43901), (572, 37454), (614, 34892), (671, 31928), (793, 27016), (1144, 18727), (1228, 17446), (1342, 15964), (1586, 13508), (2456, 8723), (2684, 7982), (3172, 6754), (3377, 6344), (3991, 5368)]