19764680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{199}}^1$

素因数の和:414

約数の個数: 64

約数和(自身を含む): 48384000

約数和(自身を除く): 28619320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 191, 199, 260, 382, 398, 520, 764, 796, 955, 995, 1528, 1592, 1910, 1990, 2483, 2587, 3820, 3980, 4966, 5174, 7640, 7960, 9932, 10348, 12415, 12935, 19864, 20696, 24830, 25870, 38009, 49660, 51740, 76018, 99320, 103480, 152036, 190045, 304072, 380090, 494117, 760180, 988234, 1520360, 1976468, 2470585, 3952936, 4941170, 9882340, 19764680]

約数ペア:

[(1, 19764680), (2, 9882340), (4, 4941170), (5, 3952936), (8, 2470585), (10, 1976468), (13, 1520360), (20, 988234), (26, 760180), (40, 494117), (52, 380090), (65, 304072), (104, 190045), (130, 152036), (191, 103480), (199, 99320), (260, 76018), (382, 51740), (398, 49660), (520, 38009), (764, 25870), (796, 24830), (955, 20696), (995, 19864), (1528, 12935), (1592, 12415), (1910, 10348), (1990, 9932), (2483, 7960), (2587, 7640), (3820, 5174), (3980, 4966)]