28380120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3331}}^1$

素因数の和:3416

約数の個数: 64

約数和(自身を含む): 86365440

約数和(自身を除く): 57985320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 71, 120, 142, 213, 284, 355, 426, 568, 710, 852, 1065, 1420, 1704, 2130, 2840, 3331, 4260, 6662, 8520, 9993, 13324, 16655, 19986, 26648, 33310, 39972, 49965, 66620, 79944, 99930, 133240, 199860, 236501, 399720, 473002, 709503, 946004, 1182505, 1419006, 1892008, 2365010, 2838012, 3547515, 4730020, 5676024, 7095030, 9460040, 14190060, 28380120]

約数ペア:

[(1, 28380120), (2, 14190060), (3, 9460040), (4, 7095030), (5, 5676024), (6, 4730020), (8, 3547515), (10, 2838012), (12, 2365010), (15, 1892008), (20, 1419006), (24, 1182505), (30, 946004), (40, 709503), (60, 473002), (71, 399720), (120, 236501), (142, 199860), (213, 133240), (284, 99930), (355, 79944), (426, 66620), (568, 49965), (710, 39972), (852, 33310), (1065, 26648), (1420, 19986), (1704, 16655), (2130, 13324), (2840, 9993), (3331, 8520), (4260, 6662)]