28139440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{461}}^1$

素因数の和:590

約数の個数: 80

約数和(自身を含む): 75620160

約数和(自身を除く): 47480720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 109, 112, 140, 218, 280, 436, 461, 545, 560, 763, 872, 922, 1090, 1526, 1744, 1844, 2180, 2305, 3052, 3227, 3688, 3815, 4360, 4610, 6104, 6454, 7376, 7630, 8720, 9220, 12208, 12908, 15260, 16135, 18440, 25816, 30520, 32270, 36880, 50249, 51632, 61040, 64540, 100498, 129080, 200996, 251245, 258160, 351743, 401992, 502490, 703486, 803984, 1004980, 1406972, 1758715, 2009960, 2813944, 3517430, 4019920, 5627888, 7034860, 14069720, 28139440]

約数ペア:

[(1, 28139440), (2, 14069720), (4, 7034860), (5, 5627888), (7, 4019920), (8, 3517430), (10, 2813944), (14, 2009960), (16, 1758715), (20, 1406972), (28, 1004980), (35, 803984), (40, 703486), (56, 502490), (70, 401992), (80, 351743), (109, 258160), (112, 251245), (140, 200996), (218, 129080), (280, 100498), (436, 64540), (461, 61040), (545, 51632), (560, 50249), (763, 36880), (872, 32270), (922, 30520), (1090, 25816), (1526, 18440), (1744, 16135), (1844, 15260), (2180, 12908), (2305, 12208), (3052, 9220), (3227, 8720), (3688, 7630), (3815, 7376), (4360, 6454), (4610, 6104)]