289721908

素因数分解:

$2^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{1163}}^1$

素因数の和:1253

約数の個数: 72

約数和(自身を含む): 624201984

約数和(自身を除く): 334480076

約数列:

[1, 2, 4, 7, 14, 28, 31, 41, 49, 62, 82, 98, 124, 164, 196, 217, 287, 434, 574, 868, 1148, 1163, 1271, 1519, 2009, 2326, 2542, 3038, 4018, 4652, 5084, 6076, 8036, 8141, 8897, 16282, 17794, 32564, 35588, 36053, 47683, 56987, 62279, 72106, 95366, 113974, 124558, 144212, 190732, 227948, 249116, 252371, 333781, 504742, 667562, 1009484, 1335124, 1478173, 1766597, 2336467, 2956346, 3533194, 4672934, 5912692, 7066388, 9345868, 10347211, 20694422, 41388844, 72430477, 144860954, 289721908]

約数ペア:

[(1, 289721908), (2, 144860954), (4, 72430477), (7, 41388844), (14, 20694422), (28, 10347211), (31, 9345868), (41, 7066388), (49, 5912692), (62, 4672934), (82, 3533194), (98, 2956346), (124, 2336467), (164, 1766597), (196, 1478173), (217, 1335124), (287, 1009484), (434, 667562), (574, 504742), (868, 333781), (1148, 252371), (1163, 249116), (1271, 227948), (1519, 190732), (2009, 144212), (2326, 124558), (2542, 113974), (3038, 95366), (4018, 72106), (4652, 62279), (5084, 56987), (6076, 47683), (8036, 36053), (8141, 35588), (8897, 32564), (16282, 17794)]