20079904

素因数分解:

$2^5\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:162

約数の個数: 72

約数和(自身を含む): 44271360

約数和(自身を除く): 24191456

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 47, 52, 79, 94, 104, 158, 169, 188, 208, 316, 338, 376, 416, 611, 632, 676, 752, 1027, 1222, 1264, 1352, 1504, 2054, 2444, 2528, 2704, 3713, 4108, 4888, 5408, 7426, 7943, 8216, 9776, 13351, 14852, 15886, 16432, 19552, 26702, 29704, 31772, 32864, 48269, 53404, 59408, 63544, 96538, 106808, 118816, 127088, 193076, 213616, 254176, 386152, 427232, 627497, 772304, 1254994, 1544608, 2509988, 5019976, 10039952, 20079904]

約数ペア:

[(1, 20079904), (2, 10039952), (4, 5019976), (8, 2509988), (13, 1544608), (16, 1254994), (26, 772304), (32, 627497), (47, 427232), (52, 386152), (79, 254176), (94, 213616), (104, 193076), (158, 127088), (169, 118816), (188, 106808), (208, 96538), (316, 63544), (338, 59408), (376, 53404), (416, 48269), (611, 32864), (632, 31772), (676, 29704), (752, 26702), (1027, 19552), (1222, 16432), (1264, 15886), (1352, 14852), (1504, 13351), (2054, 9776), (2444, 8216), (2528, 7943), (2704, 7426), (3713, 5408), (4108, 4888)]