20538642292

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{240263}}^1$

素因数の和:240388

約数の個数: 48

約数和(自身を含む): 42624755712

約数和(自身を除く): 22086113420

約数列:

[1, 2, 4, 7, 14, 28, 43, 71, 86, 142, 172, 284, 301, 497, 602, 994, 1204, 1988, 3053, 6106, 12212, 21371, 42742, 85484, 240263, 480526, 961052, 1681841, 3363682, 6727364, 10331309, 17058673, 20662618, 34117346, 41325236, 68234692, 72319163, 119410711, 144638326, 238821422, 289276652, 477642844, 733522939, 1467045878, 2934091756, 5134660573, 10269321146, 20538642292]

約数ペア:

[(1, 20538642292), (2, 10269321146), (4, 5134660573), (7, 2934091756), (14, 1467045878), (28, 733522939), (43, 477642844), (71, 289276652), (86, 238821422), (142, 144638326), (172, 119410711), (284, 72319163), (301, 68234692), (497, 41325236), (602, 34117346), (994, 20662618), (1204, 17058673), (1988, 10331309), (3053, 6727364), (6106, 3363682), (12212, 1681841), (21371, 961052), (42742, 480526), (85484, 240263)]