9888940940

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{809}}^1\times {\mathrm{4397}}^1$

素因数の和:5354

約数の個数: 48

約数和(自身を含む): 20946794400

約数和(自身を除く): 11057853460

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 809, 1390, 1618, 2780, 3236, 4045, 4397, 8090, 8794, 16180, 17588, 21985, 43970, 87940, 112451, 224902, 449804, 562255, 611183, 1124510, 1222366, 2249020, 2444732, 3055915, 3557173, 6111830, 7114346, 12223660, 14228692, 17785865, 35571730, 71143460, 494447047, 988894094, 1977788188, 2472235235, 4944470470, 9888940940]

約数ペア:

[(1, 9888940940), (2, 4944470470), (4, 2472235235), (5, 1977788188), (10, 988894094), (20, 494447047), (139, 71143460), (278, 35571730), (556, 17785865), (695, 14228692), (809, 12223660), (1390, 7114346), (1618, 6111830), (2780, 3557173), (3236, 3055915), (4045, 2444732), (4397, 2249020), (8090, 1222366), (8794, 1124510), (16180, 611183), (17588, 562255), (21985, 449804), (43970, 224902), (87940, 112451)]