21014720

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{3863}}^1$

素因数の和:3897

約数の個数: 56

約数和(自身を含む): 52998624

約数和(自身を除く): 31983904

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 136, 160, 170, 272, 320, 340, 544, 680, 1088, 1360, 2720, 3863, 5440, 7726, 15452, 19315, 30904, 38630, 61808, 65671, 77260, 123616, 131342, 154520, 247232, 262684, 309040, 328355, 525368, 618080, 656710, 1050736, 1236160, 1313420, 2101472, 2626840, 4202944, 5253680, 10507360, 21014720]

約数ペア:

[(1, 21014720), (2, 10507360), (4, 5253680), (5, 4202944), (8, 2626840), (10, 2101472), (16, 1313420), (17, 1236160), (20, 1050736), (32, 656710), (34, 618080), (40, 525368), (64, 328355), (68, 309040), (80, 262684), (85, 247232), (136, 154520), (160, 131342), (170, 123616), (272, 77260), (320, 65671), (340, 61808), (544, 38630), (680, 30904), (1088, 19315), (1360, 15452), (2720, 7726), (3863, 5440)]