19908180

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{12289}}^1$

素因数の和:12310

約数の個数: 60

約数和(自身を含む): 62457780

約数和(自身を除く): 42549600

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 12289, 24578, 36867, 49156, 61445, 73734, 110601, 122890, 147468, 184335, 221202, 245780, 331803, 368670, 442404, 553005, 663606, 737340, 995409, 1106010, 1327212, 1659015, 1990818, 2212020, 3318030, 3981636, 4977045, 6636060, 9954090, 19908180]

約数ペア:

[(1, 19908180), (2, 9954090), (3, 6636060), (4, 4977045), (5, 3981636), (6, 3318030), (9, 2212020), (10, 1990818), (12, 1659015), (15, 1327212), (18, 1106010), (20, 995409), (27, 737340), (30, 663606), (36, 553005), (45, 442404), (54, 368670), (60, 331803), (81, 245780), (90, 221202), (108, 184335), (135, 147468), (162, 122890), (180, 110601), (270, 73734), (324, 61445), (405, 49156), (540, 36867), (810, 24578), (1620, 12289)]