640211280

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{149}}^1\times {\mathrm{17903}}^1$

素因数の和:18068

約数の個数: 80

約数和(自身を含む): 1998086400

約数和(自身を除く): 1357875120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 149, 240, 298, 447, 596, 745, 894, 1192, 1490, 1788, 2235, 2384, 2980, 3576, 4470, 5960, 7152, 8940, 11920, 17880, 17903, 35760, 35806, 53709, 71612, 89515, 107418, 143224, 179030, 214836, 268545, 286448, 358060, 429672, 537090, 716120, 859344, 1074180, 1432240, 2148360, 2667547, 4296720, 5335094, 8002641, 10670188, 13337735, 16005282, 21340376, 26675470, 32010564, 40013205, 42680752, 53350940, 64021128, 80026410, 106701880, 128042256, 160052820, 213403760, 320105640, 640211280]

約数ペア:

[(1, 640211280), (2, 320105640), (3, 213403760), (4, 160052820), (5, 128042256), (6, 106701880), (8, 80026410), (10, 64021128), (12, 53350940), (15, 42680752), (16, 40013205), (20, 32010564), (24, 26675470), (30, 21340376), (40, 16005282), (48, 13337735), (60, 10670188), (80, 8002641), (120, 5335094), (149, 4296720), (240, 2667547), (298, 2148360), (447, 1432240), (596, 1074180), (745, 859344), (894, 716120), (1192, 537090), (1490, 429672), (1788, 358060), (2235, 286448), (2384, 268545), (2980, 214836), (3576, 179030), (4470, 143224), (5960, 107418), (7152, 89515), (8940, 71612), (11920, 53709), (17880, 35806), (17903, 35760)]