19851860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{431}}^1$

素因数の和:501

約数の個数: 72

約数和(自身を含む): 49641984

約数和(自身を除く): 29790124

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 49, 70, 94, 98, 140, 188, 196, 235, 245, 329, 431, 470, 490, 658, 862, 940, 980, 1316, 1645, 1724, 2155, 2303, 3017, 3290, 4310, 4606, 6034, 6580, 8620, 9212, 11515, 12068, 15085, 20257, 21119, 23030, 30170, 40514, 42238, 46060, 60340, 81028, 84476, 101285, 105595, 141799, 202570, 211190, 283598, 405140, 422380, 567196, 708995, 992593, 1417990, 1985186, 2835980, 3970372, 4962965, 9925930, 19851860]

約数ペア:

[(1, 19851860), (2, 9925930), (4, 4962965), (5, 3970372), (7, 2835980), (10, 1985186), (14, 1417990), (20, 992593), (28, 708995), (35, 567196), (47, 422380), (49, 405140), (70, 283598), (94, 211190), (98, 202570), (140, 141799), (188, 105595), (196, 101285), (235, 84476), (245, 81028), (329, 60340), (431, 46060), (470, 42238), (490, 40514), (658, 30170), (862, 23030), (940, 21119), (980, 20257), (1316, 15085), (1645, 12068), (1724, 11515), (2155, 9212), (2303, 8620), (3017, 6580), (3290, 6034), (4310, 4606)]