31241420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{449}}^1$

素因数の和:543

約数の個数: 72

約数和(自身を含む): 77565600

約数和(自身を除く): 46324180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 71, 98, 140, 142, 196, 245, 284, 355, 449, 490, 497, 710, 898, 980, 994, 1420, 1796, 1988, 2245, 2485, 3143, 3479, 4490, 4970, 6286, 6958, 8980, 9940, 12572, 13916, 15715, 17395, 22001, 31430, 31879, 34790, 44002, 62860, 63758, 69580, 88004, 110005, 127516, 159395, 220010, 223153, 318790, 440020, 446306, 637580, 892612, 1115765, 1562071, 2231530, 3124142, 4463060, 6248284, 7810355, 15620710, 31241420]

約数ペア:

[(1, 31241420), (2, 15620710), (4, 7810355), (5, 6248284), (7, 4463060), (10, 3124142), (14, 2231530), (20, 1562071), (28, 1115765), (35, 892612), (49, 637580), (70, 446306), (71, 440020), (98, 318790), (140, 223153), (142, 220010), (196, 159395), (245, 127516), (284, 110005), (355, 88004), (449, 69580), (490, 63758), (497, 62860), (710, 44002), (898, 34790), (980, 31879), (994, 31430), (1420, 22001), (1796, 17395), (1988, 15715), (2245, 13916), (2485, 12572), (3143, 9940), (3479, 8980), (4490, 6958), (4970, 6286)]