80674580

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{191}}^1\times {\mathrm{431}}^1$

素因数の和:645

約数の個数: 72

約数和(自身を含む): 198567936

約数和(自身を除く): 117893356

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 191, 196, 245, 382, 431, 490, 764, 862, 955, 980, 1337, 1724, 1910, 2155, 2674, 3017, 3820, 4310, 5348, 6034, 6685, 8620, 9359, 12068, 13370, 15085, 18718, 21119, 26740, 30170, 37436, 42238, 46795, 60340, 82321, 84476, 93590, 105595, 164642, 187180, 211190, 329284, 411605, 422380, 576247, 823210, 1152494, 1646420, 2304988, 2881235, 4033729, 5762470, 8067458, 11524940, 16134916, 20168645, 40337290, 80674580]

約数ペア:

[(1, 80674580), (2, 40337290), (4, 20168645), (5, 16134916), (7, 11524940), (10, 8067458), (14, 5762470), (20, 4033729), (28, 2881235), (35, 2304988), (49, 1646420), (70, 1152494), (98, 823210), (140, 576247), (191, 422380), (196, 411605), (245, 329284), (382, 211190), (431, 187180), (490, 164642), (764, 105595), (862, 93590), (955, 84476), (980, 82321), (1337, 60340), (1724, 46795), (1910, 42238), (2155, 37436), (2674, 30170), (3017, 26740), (3820, 21119), (4310, 18718), (5348, 15085), (6034, 13370), (6685, 12068), (8620, 9359)]