1521796780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{54623}}^1$

素因数の和:54838

約数の個数: 48

約数和(自身を含む): 3670732800

約数和(自身を除く): 2148936020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 199, 398, 796, 995, 1393, 1990, 2786, 3980, 5572, 6965, 13930, 27860, 54623, 109246, 218492, 273115, 382361, 546230, 764722, 1092460, 1529444, 1911805, 3823610, 7647220, 10869977, 21739954, 43479908, 54349885, 76089839, 108699770, 152179678, 217399540, 304359356, 380449195, 760898390, 1521796780]

約数ペア:

[(1, 1521796780), (2, 760898390), (4, 380449195), (5, 304359356), (7, 217399540), (10, 152179678), (14, 108699770), (20, 76089839), (28, 54349885), (35, 43479908), (70, 21739954), (140, 10869977), (199, 7647220), (398, 3823610), (796, 1911805), (995, 1529444), (1393, 1092460), (1990, 764722), (2786, 546230), (3980, 382361), (5572, 273115), (6965, 218492), (13930, 109246), (27860, 54623)]