61897780

素因数分解:

$2^2\times 5^1\times 7^4\times {\mathrm{1289}}^1$

素因数の和:1326

約数の個数: 60

約数和(自身を含む): 151758180

約数和(自身を除く): 89860400

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1289, 1372, 1715, 2401, 2578, 3430, 4802, 5156, 6445, 6860, 9023, 9604, 12005, 12890, 18046, 24010, 25780, 36092, 45115, 48020, 63161, 90230, 126322, 180460, 252644, 315805, 442127, 631610, 884254, 1263220, 1768508, 2210635, 3094889, 4421270, 6189778, 8842540, 12379556, 15474445, 30948890, 61897780]

約数ペア:

[(1, 61897780), (2, 30948890), (4, 15474445), (5, 12379556), (7, 8842540), (10, 6189778), (14, 4421270), (20, 3094889), (28, 2210635), (35, 1768508), (49, 1263220), (70, 884254), (98, 631610), (140, 442127), (196, 315805), (245, 252644), (343, 180460), (490, 126322), (686, 90230), (980, 63161), (1289, 48020), (1372, 45115), (1715, 36092), (2401, 25780), (2578, 24010), (3430, 18046), (4802, 12890), (5156, 12005), (6445, 9604), (6860, 9023)]