128082140

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{163}}^1\times {\mathrm{389}}^1$

素因数の和:662

約数の個数: 48

約数和(自身を含む): 274004640

約数和(自身を除く): 145922500

約数列:

[1, 2, 4, 5, 10, 20, 101, 163, 202, 326, 389, 404, 505, 652, 778, 815, 1010, 1556, 1630, 1945, 2020, 3260, 3890, 7780, 16463, 32926, 39289, 63407, 65852, 78578, 82315, 126814, 157156, 164630, 196445, 253628, 317035, 329260, 392890, 634070, 785780, 1268140, 6404107, 12808214, 25616428, 32020535, 64041070, 128082140]

約数ペア:

[(1, 128082140), (2, 64041070), (4, 32020535), (5, 25616428), (10, 12808214), (20, 6404107), (101, 1268140), (163, 785780), (202, 634070), (326, 392890), (389, 329260), (404, 317035), (505, 253628), (652, 196445), (778, 164630), (815, 157156), (1010, 126814), (1556, 82315), (1630, 78578), (1945, 65852), (2020, 63407), (3260, 39289), (3890, 32926), (7780, 16463)]