19958048

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{59}}^1$

素因数の和:142

約数の個数: 72

約数和(自身を含む): 45042480

約数和(自身を除く): 25084432

約数列:

[1, 2, 4, 8, 11, 16, 22, 31, 32, 44, 59, 62, 88, 118, 124, 176, 236, 248, 341, 352, 472, 496, 649, 682, 944, 961, 992, 1298, 1364, 1829, 1888, 1922, 2596, 2728, 3658, 3844, 5192, 5456, 7316, 7688, 10384, 10571, 10912, 14632, 15376, 20119, 20768, 21142, 29264, 30752, 40238, 42284, 56699, 58528, 80476, 84568, 113398, 160952, 169136, 226796, 321904, 338272, 453592, 623689, 643808, 907184, 1247378, 1814368, 2494756, 4989512, 9979024, 19958048]

約数ペア:

[(1, 19958048), (2, 9979024), (4, 4989512), (8, 2494756), (11, 1814368), (16, 1247378), (22, 907184), (31, 643808), (32, 623689), (44, 453592), (59, 338272), (62, 321904), (88, 226796), (118, 169136), (124, 160952), (176, 113398), (236, 84568), (248, 80476), (341, 58528), (352, 56699), (472, 42284), (496, 40238), (649, 30752), (682, 29264), (944, 21142), (961, 20768), (992, 20119), (1298, 15376), (1364, 14632), (1829, 10912), (1888, 10571), (1922, 10384), (2596, 7688), (2728, 7316), (3658, 5456), (3844, 5192)]