640370475

素因数分解:

$3^3\times 5^2\times {\mathrm{191}}^1\times {\mathrm{4967}}^1$

素因数の和:5177

約数の個数: 48

約数和(自身を含む): 1182781440

約数和(自身を除く): 542410965

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 191, 225, 573, 675, 955, 1719, 2865, 4775, 4967, 5157, 8595, 14325, 14901, 24835, 25785, 42975, 44703, 74505, 124175, 128925, 134109, 223515, 372525, 670545, 948697, 1117575, 2846091, 3352725, 4743485, 8538273, 14230455, 23717425, 25614819, 42691365, 71152275, 128074095, 213456825, 640370475]

約数ペア:

[(1, 640370475), (3, 213456825), (5, 128074095), (9, 71152275), (15, 42691365), (25, 25614819), (27, 23717425), (45, 14230455), (75, 8538273), (135, 4743485), (191, 3352725), (225, 2846091), (573, 1117575), (675, 948697), (955, 670545), (1719, 372525), (2865, 223515), (4775, 134109), (4967, 128925), (5157, 124175), (8595, 74505), (14325, 44703), (14901, 42975), (24835, 25785)]