287339985

素因数分解:

$3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1\times {\mathrm{617}}^1$

素因数の和:838

約数の個数: 48

約数和(自身を含む): 509034240

約数和(自身を除く): 221694255

約数列:

[1, 3, 5, 9, 15, 45, 79, 131, 237, 393, 395, 617, 655, 711, 1179, 1185, 1851, 1965, 3085, 3555, 5553, 5895, 9255, 10349, 27765, 31047, 48743, 51745, 80827, 93141, 146229, 155235, 242481, 243715, 404135, 438687, 465705, 727443, 731145, 1212405, 2193435, 3637215, 6385333, 19155999, 31926665, 57467997, 95779995, 287339985]

約数ペア:

[(1, 287339985), (3, 95779995), (5, 57467997), (9, 31926665), (15, 19155999), (45, 6385333), (79, 3637215), (131, 2193435), (237, 1212405), (393, 731145), (395, 727443), (617, 465705), (655, 438687), (711, 404135), (1179, 243715), (1185, 242481), (1851, 155235), (1965, 146229), (3085, 93141), (3555, 80827), (5553, 51745), (5895, 48743), (9255, 31047), (10349, 27765)]