81040428

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{18917}}^1$

素因数の和:18951

約数の個数: 72

約数和(自身を含む): 247901472

約数和(自身を除く): 166861044

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 17, 18, 21, 28, 34, 36, 42, 51, 63, 68, 84, 102, 119, 126, 153, 204, 238, 252, 306, 357, 476, 612, 714, 1071, 1428, 2142, 4284, 18917, 37834, 56751, 75668, 113502, 132419, 170253, 227004, 264838, 321589, 340506, 397257, 529676, 643178, 681012, 794514, 964767, 1191771, 1286356, 1589028, 1929534, 2251123, 2383542, 2894301, 3859068, 4502246, 4767084, 5788602, 6753369, 9004492, 11577204, 13506738, 20260107, 27013476, 40520214, 81040428]

約数ペア:

[(1, 81040428), (2, 40520214), (3, 27013476), (4, 20260107), (6, 13506738), (7, 11577204), (9, 9004492), (12, 6753369), (14, 5788602), (17, 4767084), (18, 4502246), (21, 3859068), (28, 2894301), (34, 2383542), (36, 2251123), (42, 1929534), (51, 1589028), (63, 1286356), (68, 1191771), (84, 964767), (102, 794514), (119, 681012), (126, 643178), (153, 529676), (204, 397257), (238, 340506), (252, 321589), (306, 264838), (357, 227004), (476, 170253), (612, 132419), (714, 113502), (1071, 75668), (1428, 56751), (2142, 37834), (4284, 18917)]