637840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1$

素因数の和:104

約数の個数: 80

約数和(自身を含む): 1821312

約数和(自身を除く): 1183472

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 34, 35, 40, 56, 67, 68, 70, 80, 85, 112, 119, 134, 136, 140, 170, 238, 268, 272, 280, 335, 340, 469, 476, 536, 560, 595, 670, 680, 938, 952, 1072, 1139, 1190, 1340, 1360, 1876, 1904, 2278, 2345, 2380, 2680, 3752, 4556, 4690, 4760, 5360, 5695, 7504, 7973, 9112, 9380, 9520, 11390, 15946, 18224, 18760, 22780, 31892, 37520, 39865, 45560, 63784, 79730, 91120, 127568, 159460, 318920, 637840]

約数ペア:

[(1, 637840), (2, 318920), (4, 159460), (5, 127568), (7, 91120), (8, 79730), (10, 63784), (14, 45560), (16, 39865), (17, 37520), (20, 31892), (28, 22780), (34, 18760), (35, 18224), (40, 15946), (56, 11390), (67, 9520), (68, 9380), (70, 9112), (80, 7973), (85, 7504), (112, 5695), (119, 5360), (134, 4760), (136, 4690), (140, 4556), (170, 3752), (238, 2680), (268, 2380), (272, 2345), (280, 2278), (335, 1904), (340, 1876), (469, 1360), (476, 1340), (536, 1190), (560, 1139), (595, 1072), (670, 952), (680, 938)]