21494538

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{457}}^1$

素因数の和:548

約数の個数: 64

約数和(自身を含む): 52321920

約数和(自身を除く): 30827382

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 67, 78, 117, 134, 201, 234, 351, 402, 457, 603, 702, 871, 914, 1206, 1371, 1742, 1809, 2613, 2742, 3618, 4113, 5226, 5941, 7839, 8226, 11882, 12339, 15678, 17823, 23517, 24678, 30619, 35646, 47034, 53469, 61238, 91857, 106938, 160407, 183714, 275571, 320814, 398047, 551142, 796094, 826713, 1194141, 1653426, 2388282, 3582423, 7164846, 10747269, 21494538]

約数ペア:

[(1, 21494538), (2, 10747269), (3, 7164846), (6, 3582423), (9, 2388282), (13, 1653426), (18, 1194141), (26, 826713), (27, 796094), (39, 551142), (54, 398047), (67, 320814), (78, 275571), (117, 183714), (134, 160407), (201, 106938), (234, 91857), (351, 61238), (402, 53469), (457, 47034), (603, 35646), (702, 30619), (871, 24678), (914, 23517), (1206, 17823), (1371, 15678), (1742, 12339), (1809, 11882), (2613, 8226), (2742, 7839), (3618, 5941), (4113, 5226)]