15120020

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{199}}^1$

素因数の和:368

約数の個数: 48

約数和(自身を含む): 33264000

約数和(自身を除く): 18143980

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 131, 145, 199, 262, 290, 398, 524, 580, 655, 796, 995, 1310, 1990, 2620, 3799, 3980, 5771, 7598, 11542, 15196, 18995, 23084, 26069, 28855, 37990, 52138, 57710, 75980, 104276, 115420, 130345, 260690, 521380, 756001, 1512002, 3024004, 3780005, 7560010, 15120020]

約数ペア:

[(1, 15120020), (2, 7560010), (4, 3780005), (5, 3024004), (10, 1512002), (20, 756001), (29, 521380), (58, 260690), (116, 130345), (131, 115420), (145, 104276), (199, 75980), (262, 57710), (290, 52138), (398, 37990), (524, 28855), (580, 26069), (655, 23084), (796, 18995), (995, 15196), (1310, 11542), (1990, 7598), (2620, 5771), (3799, 3980)]