645139712

素因数分解:

$2^8\times 7^1\times {\mathrm{521}}^1\times {\mathrm{691}}^1$

素因数の和:1235

約数の個数: 72

約数和(自身を含む): 1476683712

約数和(自身を除く): 831544000

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 448, 521, 691, 896, 1042, 1382, 1792, 2084, 2764, 3647, 4168, 4837, 5528, 7294, 8336, 9674, 11056, 14588, 16672, 19348, 22112, 29176, 33344, 38696, 44224, 58352, 66688, 77392, 88448, 116704, 133376, 154784, 176896, 233408, 309568, 360011, 466816, 619136, 720022, 933632, 1238272, 1440044, 2520077, 2880088, 5040154, 5760176, 10080308, 11520352, 20160616, 23040704, 40321232, 46081408, 80642464, 92162816, 161284928, 322569856, 645139712]

約数ペア:

[(1, 645139712), (2, 322569856), (4, 161284928), (7, 92162816), (8, 80642464), (14, 46081408), (16, 40321232), (28, 23040704), (32, 20160616), (56, 11520352), (64, 10080308), (112, 5760176), (128, 5040154), (224, 2880088), (256, 2520077), (448, 1440044), (521, 1238272), (691, 933632), (896, 720022), (1042, 619136), (1382, 466816), (1792, 360011), (2084, 309568), (2764, 233408), (3647, 176896), (4168, 154784), (4837, 133376), (5528, 116704), (7294, 88448), (8336, 77392), (9674, 66688), (11056, 58352), (14588, 44224), (16672, 38696), (19348, 33344), (22112, 29176)]