20018248

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:230

約数の個数: 64

約数和(自身を含む): 42854400

約数和(自身を除く): 22836152

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 61, 68, 76, 122, 127, 136, 152, 244, 254, 323, 488, 508, 646, 1016, 1037, 1159, 1292, 2074, 2159, 2318, 2413, 2584, 4148, 4318, 4636, 4826, 7747, 8296, 8636, 9272, 9652, 15494, 17272, 19304, 19703, 30988, 39406, 41021, 61976, 78812, 82042, 131699, 147193, 157624, 164084, 263398, 294386, 328168, 526796, 588772, 1053592, 1177544, 2502281, 5004562, 10009124, 20018248]

約数ペア:

[(1, 20018248), (2, 10009124), (4, 5004562), (8, 2502281), (17, 1177544), (19, 1053592), (34, 588772), (38, 526796), (61, 328168), (68, 294386), (76, 263398), (122, 164084), (127, 157624), (136, 147193), (152, 131699), (244, 82042), (254, 78812), (323, 61976), (488, 41021), (508, 39406), (646, 30988), (1016, 19703), (1037, 19304), (1159, 17272), (1292, 15494), (2074, 9652), (2159, 9272), (2318, 8636), (2413, 8296), (2584, 7747), (4148, 4826), (4318, 4636)]