20207968

素因数分解:

$2^5\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{307}}^1$

素因数の和:356

約数の個数: 72

約数和(自身を含む): 46453176

約数和(自身を除く): 26245208

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 32, 34, 44, 68, 88, 121, 136, 176, 187, 242, 272, 307, 352, 374, 484, 544, 614, 748, 968, 1228, 1496, 1936, 2057, 2456, 2992, 3377, 3872, 4114, 4912, 5219, 5984, 6754, 8228, 9824, 10438, 13508, 16456, 20876, 27016, 32912, 37147, 41752, 54032, 57409, 65824, 74294, 83504, 108064, 114818, 148588, 167008, 229636, 297176, 459272, 594352, 631499, 918544, 1188704, 1262998, 1837088, 2525996, 5051992, 10103984, 20207968]

約数ペア:

[(1, 20207968), (2, 10103984), (4, 5051992), (8, 2525996), (11, 1837088), (16, 1262998), (17, 1188704), (22, 918544), (32, 631499), (34, 594352), (44, 459272), (68, 297176), (88, 229636), (121, 167008), (136, 148588), (176, 114818), (187, 108064), (242, 83504), (272, 74294), (307, 65824), (352, 57409), (374, 54032), (484, 41752), (544, 37147), (614, 32912), (748, 27016), (968, 20876), (1228, 16456), (1496, 13508), (1936, 10438), (2057, 9824), (2456, 8228), (2992, 6754), (3377, 5984), (3872, 5219), (4114, 4912)]